minor Arm cleanups
This commit is contained in:
parent
5d3d59393a
commit
4919ac334f
@ -1,539 +0,0 @@
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From ba60a01e02086b0a242cf5ea3c59419108ada40b Mon Sep 17 00:00:00 2001
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Date: Tue, 11 Jun 2019 19:58:34 +0200
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Subject: [PATCH 1/5] clk: bcm2835: remove pllb
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Raspberry Pi's firmware controls this pll, we should use the firmware
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interface to access it.
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Acked-by: Eric Anholt <eric@anholt.net>
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---
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drivers/clk/bcm/clk-bcm2835.c | 28 ++++------------------------
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1 file changed, 4 insertions(+), 24 deletions(-)
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diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
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index 770bb01f523e..867ae3c20041 100644
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--- a/drivers/clk/bcm/clk-bcm2835.c
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+++ b/drivers/clk/bcm/clk-bcm2835.c
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@@ -1651,30 +1651,10 @@ static const struct bcm2835_clk_desc clk_desc_array[] = {
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.fixed_divider = 1,
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.flags = CLK_SET_RATE_PARENT),
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- /* PLLB is used for the ARM's clock. */
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- [BCM2835_PLLB] = REGISTER_PLL(
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- .name = "pllb",
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- .cm_ctrl_reg = CM_PLLB,
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- .a2w_ctrl_reg = A2W_PLLB_CTRL,
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- .frac_reg = A2W_PLLB_FRAC,
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- .ana_reg_base = A2W_PLLB_ANA0,
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- .reference_enable_mask = A2W_XOSC_CTRL_PLLB_ENABLE,
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- .lock_mask = CM_LOCK_FLOCKB,
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-
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- .ana = &bcm2835_ana_default,
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-
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- .min_rate = 600000000u,
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- .max_rate = 3000000000u,
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- .max_fb_rate = BCM2835_MAX_FB_RATE),
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- [BCM2835_PLLB_ARM] = REGISTER_PLL_DIV(
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- .name = "pllb_arm",
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- .source_pll = "pllb",
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- .cm_reg = CM_PLLB,
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- .a2w_reg = A2W_PLLB_ARM,
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- .load_mask = CM_PLLB_LOADARM,
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- .hold_mask = CM_PLLB_HOLDARM,
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- .fixed_divider = 1,
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- .flags = CLK_SET_RATE_PARENT),
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+ /*
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+ * PLLB is used for the ARM's clock. Controlled by firmware, see
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+ * clk-raspberrypi.c.
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+ */
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/*
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* PLLC is the core PLL, used to drive the core VPU clock.
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--
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2.21.0
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From 64482a97a0a2f14ebdbfe80a8eb0e063d293807b Mon Sep 17 00:00:00 2001
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From: Peter Robinson <pbrobinson@gmail.com>
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Date: Wed, 12 Jun 2019 17:23:12 +0100
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Subject: [PATCH 2/5] clk: bcm283x: add driver interfacing with Raspberry Pi's
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firmware
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Raspberry Pi's firmware offers an interface though which update it's
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clock's frequencies. This is specially useful in order to change the CPU
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clock (pllb_arm) which is 'owned' by the firmware and we're unable to
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scale using the register interface provided by clk-bcm2835.
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Acked-by: Eric Anholt <eric@anholt.net>
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Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
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---
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drivers/clk/bcm/Kconfig | 7 +
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drivers/clk/bcm/Makefile | 1 +
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drivers/clk/bcm/clk-raspberrypi.c | 300 ++++++++++++++++++++++++++++++
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3 files changed, 308 insertions(+)
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create mode 100644 drivers/clk/bcm/clk-raspberrypi.c
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diff --git a/drivers/clk/bcm/Kconfig b/drivers/clk/bcm/Kconfig
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index 29ee7b776cd4..a4a2775d65e1 100644
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--- a/drivers/clk/bcm/Kconfig
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+++ b/drivers/clk/bcm/Kconfig
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@@ -64,3 +64,10 @@ config CLK_BCM_SR
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default ARCH_BCM_IPROC
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help
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Enable common clock framework support for the Broadcom Stingray SoC
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+
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+config CLK_RASPBERRYPI
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+ tristate "Raspberry Pi firmware based clock support"
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+ depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
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+ help
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+ Enable common clock framework support for Raspberry Pi's firmware
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+ dependent clocks
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diff --git a/drivers/clk/bcm/Makefile b/drivers/clk/bcm/Makefile
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index 002661d39128..eb7159099d82 100644
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--- a/drivers/clk/bcm/Makefile
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+++ b/drivers/clk/bcm/Makefile
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@@ -7,6 +7,7 @@ obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm21664.o
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obj-$(CONFIG_COMMON_CLK_IPROC) += clk-iproc-armpll.o clk-iproc-pll.o clk-iproc-asiu.o
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obj-$(CONFIG_ARCH_BCM2835) += clk-bcm2835.o
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obj-$(CONFIG_ARCH_BCM2835) += clk-bcm2835-aux.o
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+obj-$(CONFIG_CLK_RASPBERRYPI) += clk-raspberrypi.o
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obj-$(CONFIG_ARCH_BCM_53573) += clk-bcm53573-ilp.o
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obj-$(CONFIG_CLK_BCM_CYGNUS) += clk-cygnus.o
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obj-$(CONFIG_CLK_BCM_HR2) += clk-hr2.o
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diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c
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new file mode 100644
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index 000000000000..467933767106
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--- /dev/null
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+++ b/drivers/clk/bcm/clk-raspberrypi.c
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@@ -0,0 +1,300 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+/*
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+ * Raspberry Pi driver for firmware controlled clocks
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+ *
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+ * Even though clk-bcm2835 provides an interface to the hardware registers for
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+ * the system clocks we've had to factor out 'pllb' as the firmware 'owns' it.
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+ * We're not allowed to change it directly as we might race with the
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+ * over-temperature and under-voltage protections provided by the firmware.
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+ *
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+ * Copyright (C) 2019 Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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+ */
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+
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+#include <linux/clkdev.h>
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+#include <linux/clk-provider.h>
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+#include <linux/io.h>
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+
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+#include <soc/bcm2835/raspberrypi-firmware.h>
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+
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+#define RPI_FIRMWARE_ARM_CLK_ID 0x000000003
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+
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+#define RPI_FIRMWARE_STATE_ENABLE_BIT BIT(0)
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+#define RPI_FIRMWARE_STATE_WAIT_BIT BIT(1)
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+
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+/*
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+ * Even though the firmware interface alters 'pllb' the frequencies are
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+ * provided as per 'pllb_arm'. We need to scale before passing them trough.
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+ */
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+#define RPI_FIRMWARE_PLLB_ARM_DIV_RATE 2
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+
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+#define A2W_PLL_FRAC_BITS 20
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+
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+struct raspberrypi_clk {
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+ struct device *dev;
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+ struct rpi_firmware *firmware;
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+
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+ unsigned long min_rate;
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+ unsigned long max_rate;
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+
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+ struct clk_hw pllb;
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+ struct clk_hw *pllb_arm;
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+ struct clk_lookup *pllb_arm_lookup;
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+};
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+
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+/*
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+ * Structure of the message passed to Raspberry Pi's firmware in order to
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+ * change clock rates. The 'disable_turbo' option is only available to the ARM
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+ * clock (pllb) which we enable by default as turbo mode will alter multiple
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+ * clocks at once.
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+ *
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+ * Even though we're able to access the clock registers directly we're bound to
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+ * use the firmware interface as the firmware ultimately takes care of
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+ * mitigating overheating/undervoltage situations and we would be changing
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+ * frequencies behind his back.
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+ *
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+ * For more information on the firmware interface check:
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+ * https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface
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+ */
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+struct raspberrypi_firmware_prop {
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+ __le32 id;
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+ __le32 val;
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+ __le32 disable_turbo;
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+} __packed;
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+
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+static int raspberrypi_clock_property(struct rpi_firmware *firmware, u32 tag,
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+ u32 clk, u32 *val)
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+{
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+ struct raspberrypi_firmware_prop msg = {
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+ .id = clk,
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+ .val = *val,
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+ .disable_turbo = 1,
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+ };
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+ int ret;
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+
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+ ret = rpi_firmware_property(firmware, tag, &msg, sizeof(msg));
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+ if (ret)
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+ return ret;
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+
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+ *val = msg.val;
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+
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+ return 0;
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+}
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+
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+static int raspberrypi_fw_pll_is_on(struct clk_hw *hw)
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+{
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+ struct raspberrypi_clk *rpi = container_of(hw, struct raspberrypi_clk,
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+ pllb);
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+ u32 val = 0;
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+ int ret;
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+
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+ ret = raspberrypi_clock_property(rpi->firmware,
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+ RPI_FIRMWARE_GET_CLOCK_STATE,
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+ RPI_FIRMWARE_ARM_CLK_ID, &val);
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+ if (ret)
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+ return 0;
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+
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+ return !!(val & RPI_FIRMWARE_STATE_ENABLE_BIT);
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+}
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+
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+
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+static unsigned long raspberrypi_fw_pll_get_rate(struct clk_hw *hw,
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+ unsigned long parent_rate)
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+{
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+ struct raspberrypi_clk *rpi = container_of(hw, struct raspberrypi_clk,
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+ pllb);
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+ u32 val = 0;
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+ int ret;
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+
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+ ret = raspberrypi_clock_property(rpi->firmware,
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+ RPI_FIRMWARE_GET_CLOCK_RATE,
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+ RPI_FIRMWARE_ARM_CLK_ID,
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+ &val);
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+ if (ret)
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+ return ret;
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+
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+ return val * RPI_FIRMWARE_PLLB_ARM_DIV_RATE;
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+}
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+
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+static int raspberrypi_fw_pll_set_rate(struct clk_hw *hw, unsigned long rate,
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+ unsigned long parent_rate)
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+{
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+ struct raspberrypi_clk *rpi = container_of(hw, struct raspberrypi_clk,
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+ pllb);
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+ u32 new_rate = rate / RPI_FIRMWARE_PLLB_ARM_DIV_RATE;
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+ int ret;
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+
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+ ret = raspberrypi_clock_property(rpi->firmware,
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+ RPI_FIRMWARE_SET_CLOCK_RATE,
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+ RPI_FIRMWARE_ARM_CLK_ID,
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+ &new_rate);
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+ if (ret)
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+ dev_err_ratelimited(rpi->dev, "Failed to change %s frequency: %d",
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+ clk_hw_get_name(hw), ret);
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+
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+ return ret;
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+}
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+
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+/*
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+ * Sadly there is no firmware rate rounding interface. We borrowed it from
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+ * clk-bcm2835.
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+ */
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+static int raspberrypi_pll_determine_rate(struct clk_hw *hw,
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+ struct clk_rate_request *req)
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+{
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+ struct raspberrypi_clk *rpi = container_of(hw, struct raspberrypi_clk,
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+ pllb);
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+ u64 div, final_rate;
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+ u32 ndiv, fdiv;
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+
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+ /* We can't use req->rate directly as it would overflow */
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+ final_rate = clamp(req->rate, rpi->min_rate, rpi->max_rate);
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+
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+ div = (u64)final_rate << A2W_PLL_FRAC_BITS;
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+ do_div(div, req->best_parent_rate);
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+
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+ ndiv = div >> A2W_PLL_FRAC_BITS;
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+ fdiv = div & ((1 << A2W_PLL_FRAC_BITS) - 1);
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+
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+ final_rate = ((u64)req->best_parent_rate *
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+ ((ndiv << A2W_PLL_FRAC_BITS) + fdiv));
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+
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+ req->rate = final_rate >> A2W_PLL_FRAC_BITS;
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+
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+ return 0;
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+}
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+
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+static const struct clk_ops raspberrypi_firmware_pll_clk_ops = {
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+ .is_prepared = raspberrypi_fw_pll_is_on,
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+ .recalc_rate = raspberrypi_fw_pll_get_rate,
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+ .set_rate = raspberrypi_fw_pll_set_rate,
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+ .determine_rate = raspberrypi_pll_determine_rate,
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+};
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+
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+static int raspberrypi_register_pllb(struct raspberrypi_clk *rpi)
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+{
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+ u32 min_rate = 0, max_rate = 0;
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+ struct clk_init_data init;
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+ int ret;
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+
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+ memset(&init, 0, sizeof(init));
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+
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+ /* All of the PLLs derive from the external oscillator. */
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+ init.parent_names = (const char *[]){ "osc" };
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+ init.num_parents = 1;
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+ init.name = "pllb";
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+ init.ops = &raspberrypi_firmware_pll_clk_ops;
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+ init.flags = CLK_GET_RATE_NOCACHE | CLK_IGNORE_UNUSED;
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+
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+ /* Get min & max rates set by the firmware */
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+ ret = raspberrypi_clock_property(rpi->firmware,
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+ RPI_FIRMWARE_GET_MIN_CLOCK_RATE,
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+ RPI_FIRMWARE_ARM_CLK_ID,
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+ &min_rate);
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+ if (ret) {
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+ dev_err(rpi->dev, "Failed to get %s min freq: %d\n",
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+ init.name, ret);
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+ return ret;
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+ }
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+
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+ ret = raspberrypi_clock_property(rpi->firmware,
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+ RPI_FIRMWARE_GET_MAX_CLOCK_RATE,
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+ RPI_FIRMWARE_ARM_CLK_ID,
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+ &max_rate);
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+ if (ret) {
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+ dev_err(rpi->dev, "Failed to get %s max freq: %d\n",
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+ init.name, ret);
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+ return ret;
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+ }
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+
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+ if (!min_rate || !max_rate) {
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+ dev_err(rpi->dev, "Unexpected frequency range: min %u, max %u\n",
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+ min_rate, max_rate);
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+ return -EINVAL;
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+ }
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+
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+ dev_info(rpi->dev, "CPU frequency range: min %u, max %u\n",
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+ min_rate, max_rate);
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+
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+ rpi->min_rate = min_rate * RPI_FIRMWARE_PLLB_ARM_DIV_RATE;
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+ rpi->max_rate = max_rate * RPI_FIRMWARE_PLLB_ARM_DIV_RATE;
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+
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+ rpi->pllb.init = &init;
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+
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+ return devm_clk_hw_register(rpi->dev, &rpi->pllb);
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+}
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+
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+static int raspberrypi_register_pllb_arm(struct raspberrypi_clk *rpi)
|
|
||||||
+{
|
|
||||||
+ rpi->pllb_arm = clk_hw_register_fixed_factor(rpi->dev,
|
|
||||||
+ "pllb_arm", "pllb",
|
|
||||||
+ CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
|
|
||||||
+ 1, 2);
|
|
||||||
+ if (IS_ERR(rpi->pllb_arm)) {
|
|
||||||
+ dev_err(rpi->dev, "Failed to initialize pllb_arm\n");
|
|
||||||
+ return PTR_ERR(rpi->pllb_arm);
|
|
||||||
+ }
|
|
||||||
+
|
|
||||||
+ rpi->pllb_arm_lookup = clkdev_hw_create(rpi->pllb_arm, NULL, "cpu0");
|
|
||||||
+ if (!rpi->pllb_arm_lookup) {
|
|
||||||
+ dev_err(rpi->dev, "Failed to initialize pllb_arm_lookup\n");
|
|
||||||
+ clk_hw_unregister_fixed_factor(rpi->pllb_arm);
|
|
||||||
+ return -ENOMEM;
|
|
||||||
+ }
|
|
||||||
+
|
|
||||||
+ return 0;
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
+static int raspberrypi_clk_probe(struct platform_device *pdev)
|
|
||||||
+{
|
|
||||||
+ struct device_node *firmware_node;
|
|
||||||
+ struct device *dev = &pdev->dev;
|
|
||||||
+ struct rpi_firmware *firmware;
|
|
||||||
+ struct raspberrypi_clk *rpi;
|
|
||||||
+ int ret;
|
|
||||||
+
|
|
||||||
+ firmware_node = of_find_compatible_node(NULL, NULL,
|
|
||||||
+ "raspberrypi,bcm2835-firmware");
|
|
||||||
+ if (!firmware_node) {
|
|
||||||
+ dev_err(dev, "Missing firmware node\n");
|
|
||||||
+ return -ENOENT;
|
|
||||||
+ }
|
|
||||||
+
|
|
||||||
+ firmware = rpi_firmware_get(firmware_node);
|
|
||||||
+ of_node_put(firmware_node);
|
|
||||||
+ if (!firmware)
|
|
||||||
+ return -EPROBE_DEFER;
|
|
||||||
+
|
|
||||||
+ rpi = devm_kzalloc(dev, sizeof(*rpi), GFP_KERNEL);
|
|
||||||
+ if (!rpi)
|
|
||||||
+ return -ENOMEM;
|
|
||||||
+
|
|
||||||
+ rpi->dev = dev;
|
|
||||||
+ rpi->firmware = firmware;
|
|
||||||
+
|
|
||||||
+ ret = raspberrypi_register_pllb(rpi);
|
|
||||||
+ if (ret) {
|
|
||||||
+ dev_err(dev, "Failed to initialize pllb, %d\n", ret);
|
|
||||||
+ return ret;
|
|
||||||
+ }
|
|
||||||
+
|
|
||||||
+ ret = raspberrypi_register_pllb_arm(rpi);
|
|
||||||
+ if (ret)
|
|
||||||
+ return ret;
|
|
||||||
+
|
|
||||||
+ return 0;
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
+static struct platform_driver raspberrypi_clk_driver = {
|
|
||||||
+ .driver = {
|
|
||||||
+ .name = "raspberrypi-clk",
|
|
||||||
+ },
|
|
||||||
+ .probe = raspberrypi_clk_probe,
|
|
||||||
+};
|
|
||||||
+module_platform_driver(raspberrypi_clk_driver);
|
|
||||||
+
|
|
||||||
+MODULE_AUTHOR("Nicolas Saenz Julienne <nsaenzjulienne@suse.de>");
|
|
||||||
+MODULE_DESCRIPTION("Raspberry Pi firmware clock driver");
|
|
||||||
+MODULE_LICENSE("GPL");
|
|
||||||
+MODULE_ALIAS("platform:raspberrypi-clk");
|
|
||||||
--
|
|
||||||
2.21.0
|
|
||||||
|
|
||||||
From e750e62addb9ee00f47ab4a73c0645d44172ab12 Mon Sep 17 00:00:00 2001
|
|
||||||
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
|
||||||
Date: Tue, 11 Jun 2019 19:58:38 +0200
|
|
||||||
Subject: [PATCH 3/5] firmware: raspberrypi: register clk device
|
|
||||||
|
|
||||||
Since clk-raspberrypi is tied to the VC4 firmware instead of particular
|
|
||||||
hardware it's registration should be performed by the firmware driver.
|
|
||||||
|
|
||||||
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
|
||||||
Acked-by: Eric Anholt <eric@anholt.net>
|
|
||||||
---
|
|
||||||
drivers/firmware/raspberrypi.c | 10 ++++++++++
|
|
||||||
1 file changed, 10 insertions(+)
|
|
||||||
|
|
||||||
diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
|
|
||||||
index 61be15d9df7d..da26a584dca0 100644
|
|
||||||
--- a/drivers/firmware/raspberrypi.c
|
|
||||||
+++ b/drivers/firmware/raspberrypi.c
|
|
||||||
@@ -20,6 +20,7 @@
|
|
||||||
#define MBOX_CHAN_PROPERTY 8
|
|
||||||
|
|
||||||
static struct platform_device *rpi_hwmon;
|
|
||||||
+static struct platform_device *rpi_clk;
|
|
||||||
|
|
||||||
struct rpi_firmware {
|
|
||||||
struct mbox_client cl;
|
|
||||||
@@ -207,6 +208,12 @@ rpi_register_hwmon_driver(struct device *dev, struct rpi_firmware *fw)
|
|
||||||
-1, NULL, 0);
|
|
||||||
}
|
|
||||||
|
|
||||||
+static void rpi_register_clk_driver(struct device *dev)
|
|
||||||
+{
|
|
||||||
+ rpi_clk = platform_device_register_data(dev, "raspberrypi-clk",
|
|
||||||
+ -1, NULL, 0);
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
static int rpi_firmware_probe(struct platform_device *pdev)
|
|
||||||
{
|
|
||||||
struct device *dev = &pdev->dev;
|
|
||||||
@@ -234,6 +241,7 @@ static int rpi_firmware_probe(struct platform_device *pdev)
|
|
||||||
|
|
||||||
rpi_firmware_print_firmware_revision(fw);
|
|
||||||
rpi_register_hwmon_driver(dev, fw);
|
|
||||||
+ rpi_register_clk_driver(dev);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
@@ -254,6 +262,8 @@ static int rpi_firmware_remove(struct platform_device *pdev)
|
|
||||||
|
|
||||||
platform_device_unregister(rpi_hwmon);
|
|
||||||
rpi_hwmon = NULL;
|
|
||||||
+ platform_device_unregister(rpi_clk);
|
|
||||||
+ rpi_clk = NULL;
|
|
||||||
mbox_free_channel(fw->chan);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
--
|
|
||||||
2.21.0
|
|
||||||
|
|
||||||
From af32d83d10976ff357c56adba79fa3cb06e1c32d Mon Sep 17 00:00:00 2001
|
|
||||||
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
|
||||||
Date: Tue, 11 Jun 2019 19:58:42 +0200
|
|
||||||
Subject: [PATCH 5/5] clk: raspberrypi: register platform device for
|
|
||||||
raspberrypi-cpufreq
|
|
||||||
|
|
||||||
As 'clk-raspberrypi' depends on RPi's firmware interface, which might be
|
|
||||||
configured as a module, the cpu clock might not be available for the
|
|
||||||
cpufreq driver during it's init process. So we register the
|
|
||||||
'raspberrypi-cpufreq' platform device after the probe sequence succeeds.
|
|
||||||
|
|
||||||
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
|
||||||
Acked-by: Eric Anholt <eric@anholt.net>
|
|
||||||
---
|
|
||||||
drivers/clk/bcm/clk-raspberrypi.c | 15 +++++++++++++++
|
|
||||||
1 file changed, 15 insertions(+)
|
|
||||||
|
|
||||||
diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c
|
|
||||||
index 467933767106..7f9b001f8d70 100644
|
|
||||||
--- a/drivers/clk/bcm/clk-raspberrypi.c
|
|
||||||
+++ b/drivers/clk/bcm/clk-raspberrypi.c
|
|
||||||
@@ -34,6 +34,7 @@
|
|
||||||
struct raspberrypi_clk {
|
|
||||||
struct device *dev;
|
|
||||||
struct rpi_firmware *firmware;
|
|
||||||
+ struct platform_device *cpufreq;
|
|
||||||
|
|
||||||
unsigned long min_rate;
|
|
||||||
unsigned long max_rate;
|
|
||||||
@@ -272,6 +273,7 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
|
|
||||||
|
|
||||||
rpi->dev = dev;
|
|
||||||
rpi->firmware = firmware;
|
|
||||||
+ platform_set_drvdata(pdev, rpi);
|
|
||||||
|
|
||||||
ret = raspberrypi_register_pllb(rpi);
|
|
||||||
if (ret) {
|
|
||||||
@@ -283,6 +285,18 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
|
|
||||||
if (ret)
|
|
||||||
return ret;
|
|
||||||
|
|
||||||
+ rpi->cpufreq = platform_device_register_data(dev, "raspberrypi-cpufreq",
|
|
||||||
+ -1, NULL, 0);
|
|
||||||
+
|
|
||||||
+ return 0;
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
+static int raspberrypi_clk_remove(struct platform_device *pdev)
|
|
||||||
+{
|
|
||||||
+ struct raspberrypi_clk *rpi = platform_get_drvdata(pdev);
|
|
||||||
+
|
|
||||||
+ platform_device_unregister(rpi->cpufreq);
|
|
||||||
+
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
@@ -291,6 +305,7 @@ static struct platform_driver raspberrypi_clk_driver = {
|
|
||||||
.name = "raspberrypi-clk",
|
|
||||||
},
|
|
||||||
.probe = raspberrypi_clk_probe,
|
|
||||||
+ .remove = raspberrypi_clk_remove,
|
|
||||||
};
|
|
||||||
module_platform_driver(raspberrypi_clk_driver);
|
|
||||||
|
|
||||||
--
|
|
||||||
2.21.0
|
|
||||||
|
|
@ -1,145 +0,0 @@
|
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From patchwork Thu Jun 13 16:27:45 2019
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|
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To: devicetree@vger.kernel.org
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|
||||||
Subject: [PATCH] arm64: dts: rockchip: Update DWC3 modules on RK3399 SoCs
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|
||||||
Date: Thu, 13 Jun 2019 18:27:45 +0200
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|
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|
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|
|
||||||
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|
||||||
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|
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|
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||||||
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|
||||||
As per binding documentation [1], the DWC3 core should have the "ref",
|
|
||||||
"bus_early" and "suspend" clocks. As explained in the binding, those
|
|
||||||
clocks are required for new platforms but not for existing platforms
|
|
||||||
before commit fe8abf332b8f ("usb: dwc3: support clocks and resets for
|
|
||||||
DWC3 core").
|
|
||||||
|
|
||||||
However, as those clocks are really treated as required, this ends with
|
|
||||||
having some annoying messages when the "rockchip,rk3399-dwc3" is used:
|
|
||||||
|
|
||||||
[ 1.724107] dwc3 fe800000.dwc3: Failed to get clk 'ref': -2
|
|
||||||
[ 1.731893] dwc3 fe900000.dwc3: Failed to get clk 'ref': -2
|
|
||||||
[ 2.495937] dwc3 fe800000.dwc3: Failed to get clk 'ref': -2
|
|
||||||
[ 2.647239] dwc3 fe900000.dwc3: Failed to get clk 'ref': -2
|
|
||||||
|
|
||||||
In order to remove those annoying messages, update the DWC3 hardware
|
|
||||||
module node and add all the required clocks. With this change, both, the
|
|
||||||
glue node and the DWC3 core node, have the clocks defined, but that's
|
|
||||||
not really a problem and there isn't a side effect on do this. So, we
|
|
||||||
can get rid of the annoying get clk error messages.
|
|
||||||
|
|
||||||
[1] Documentation/devicetree/bindings/usb/dwc3.txt
|
|
||||||
|
|
||||||
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
|
|
||||||
---
|
|
||||||
|
|
||||||
arch/arm64/boot/dts/rockchip/rk3399.dtsi | 6 ++++++
|
|
||||||
1 file changed, 6 insertions(+)
|
|
||||||
|
|
||||||
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
|
|
||||||
index 196ac9b78076..a15348d185ce 100644
|
|
||||||
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
|
|
||||||
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
|
|
||||||
@@ -414,6 +414,9 @@
|
|
||||||
compatible = "snps,dwc3";
|
|
||||||
reg = <0x0 0xfe800000 0x0 0x100000>;
|
|
||||||
interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH 0>;
|
|
||||||
+ clocks = <&cru SCLK_USB3OTG0_REF>, <&cru ACLK_USB3OTG0>,
|
|
||||||
+ <&cru SCLK_USB3OTG0_SUSPEND>;
|
|
||||||
+ clock-names = "ref", "bus_early", "suspend";
|
|
||||||
dr_mode = "otg";
|
|
||||||
phys = <&u2phy0_otg>, <&tcphy0_usb3>;
|
|
||||||
phy-names = "usb2-phy", "usb3-phy";
|
|
||||||
@@ -447,6 +450,9 @@
|
|
||||||
compatible = "snps,dwc3";
|
|
||||||
reg = <0x0 0xfe900000 0x0 0x100000>;
|
|
||||||
interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH 0>;
|
|
||||||
+ clocks = <&cru SCLK_USB3OTG1_REF>, <&cru ACLK_USB3OTG1>,
|
|
||||||
+ <&cru SCLK_USB3OTG1_SUSPEND>;
|
|
||||||
+ clock-names = "ref", "bus_early", "suspend";
|
|
||||||
dr_mode = "otg";
|
|
||||||
phys = <&u2phy1_otg>, <&tcphy1_usb3>;
|
|
||||||
phy-names = "usb2-phy", "usb3-phy";
|
|
32
kernel.spec
32
kernel.spec
@ -538,34 +538,26 @@ Patch212: efi-secureboot.patch
|
|||||||
# 300 - ARM patches
|
# 300 - ARM patches
|
||||||
Patch300: arm64-Add-option-of-13-for-FORCE_MAX_ZONEORDER.patch
|
Patch300: arm64-Add-option-of-13-for-FORCE_MAX_ZONEORDER.patch
|
||||||
|
|
||||||
# http://www.spinics.net/lists/linux-tegra/msg26029.html
|
# RHBZ Bug 1576593 - work around while vendor investigates
|
||||||
Patch301: usb-phy-tegra-Add-38.4MHz-clock-table-entry.patch
|
Patch301: arm-make-highpte-not-expert.patch
|
||||||
# http://patchwork.ozlabs.org/patch/587554/
|
|
||||||
Patch302: ARM-tegra-usb-no-reset.patch
|
|
||||||
|
|
||||||
# https://patchwork.kernel.org/patch/10351797/
|
# https://patchwork.kernel.org/patch/10351797/
|
||||||
Patch303: ACPI-scan-Fix-regression-related-to-X-Gene-UARTs.patch
|
Patch302: ACPI-scan-Fix-regression-related-to-X-Gene-UARTs.patch
|
||||||
# rhbz 1574718
|
# rhbz 1574718
|
||||||
Patch304: ACPI-irq-Workaround-firmware-issue-on-X-Gene-based-m400.patch
|
Patch303: ACPI-irq-Workaround-firmware-issue-on-X-Gene-based-m400.patch
|
||||||
|
|
||||||
|
# http://www.spinics.net/lists/linux-tegra/msg26029.html
|
||||||
|
Patch304: usb-phy-tegra-Add-38.4MHz-clock-table-entry.patch
|
||||||
|
# http://patchwork.ozlabs.org/patch/587554/
|
||||||
|
Patch305: ARM-tegra-usb-no-reset.patch
|
||||||
|
|
||||||
# https://patchwork.kernel.org/project/linux-mmc/list/?submitter=71861
|
# https://patchwork.kernel.org/project/linux-mmc/list/?submitter=71861
|
||||||
Patch305: arm-sdhci-esdhc-imx-fixes.patch
|
Patch306: arm-sdhci-esdhc-imx-fixes.patch
|
||||||
|
|
||||||
# Fix accepted for 5.3 https://patchwork.kernel.org/patch/10992783/
|
|
||||||
# Patch306: arm64-dts-rockchip-Update-DWC3-modules-on-RK3399-SoCs.patch
|
|
||||||
|
|
||||||
# RHBZ Bug 1576593 - work around while vendor investigates
|
|
||||||
Patch307: arm-make-highpte-not-expert.patch
|
|
||||||
|
|
||||||
# Raspberry Pi bits
|
|
||||||
# Patch330: ARM-cpufreq-support-for-Raspberry-Pi.patch
|
|
||||||
|
|
||||||
# Tegra bits
|
# Tegra bits
|
||||||
Patch340: arm64-tegra-jetson-tx1-fixes.patch
|
Patch320: arm64-tegra-jetson-tx1-fixes.patch
|
||||||
# https://www.spinics.net/lists/linux-tegra/msg43110.html
|
# https://www.spinics.net/lists/linux-tegra/msg43110.html
|
||||||
Patch341: arm64-tegra-Jetson-TX2-Allow-bootloader-to-configure.patch
|
Patch321: arm64-tegra-Jetson-TX2-Allow-bootloader-to-configure.patch
|
||||||
|
|
||||||
# QCom ACPI device support pieces
|
|
||||||
|
|
||||||
# 400 - IBM (ppc/s390x) patches
|
# 400 - IBM (ppc/s390x) patches
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user