bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0519-clk-bcm-rpi-Add-clock-id-to-data.patch b/target/linux/bcm27xx/patches-5.4/950-0519-clk-bcm-rpi-Add-clock-id-to-data.patch
new file mode 100644
index 0000000000..09f023e09c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0519-clk-bcm-rpi-Add-clock-id-to-data.patch
@@ -0,0 +1,86 @@
+From 98d529ffea66937e8a9ba8b69172bb9c599cfa39 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 7 Feb 2020 16:04:16 +0100
+Subject: [PATCH] clk: bcm: rpi: Add clock id to data
+
+The driver has really only supported one clock so far and has hardcoded the
+ID used in communications with the firmware in all the functions
+implementing the clock framework hooks. Let's store that in the clock data
+structure so that we can support more clocks later on.
+
+Cc: Michael Turquette <mturquette@baylibre.com>
+Cc: linux-clk@vger.kernel.org
+Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Reviewed-by: Stephen Boyd <sboyd@kernel.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 16 +++++++---------
+ 1 file changed, 7 insertions(+), 9 deletions(-)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -39,6 +39,7 @@ struct raspberrypi_clk {
+ 
+ struct raspberrypi_clk_data {
+ 	struct clk_hw hw;
++	unsigned id;
+ 
+ 	unsigned long min_rate;
+ 	unsigned long max_rate;
+@@ -95,7 +96,7 @@ static int raspberrypi_fw_pll_is_on(stru
+ 
+ 	ret = raspberrypi_clock_property(rpi->firmware,
+ 					 RPI_FIRMWARE_GET_CLOCK_STATE,
+-					 RPI_FIRMWARE_ARM_CLK_ID, &val);
++					 data->id, &val);
+ 	if (ret)
+ 		return 0;
+ 
+@@ -114,8 +115,7 @@ static unsigned long raspberrypi_fw_pll_
+ 
+ 	ret = raspberrypi_clock_property(rpi->firmware,
+ 					 RPI_FIRMWARE_GET_CLOCK_RATE,
+-					 RPI_FIRMWARE_ARM_CLK_ID,
+-					 &val);
++					 data->id, &val);
+ 	if (ret)
+ 		return ret;
+ 
+@@ -133,8 +133,7 @@ static int raspberrypi_fw_pll_set_rate(s
+ 
+ 	ret = raspberrypi_clock_property(rpi->firmware,
+ 					 RPI_FIRMWARE_SET_CLOCK_RATE,
+-					 RPI_FIRMWARE_ARM_CLK_ID,
+-					 &new_rate);
++					 data->id, &new_rate);
+ 	if (ret)
+ 		dev_err_ratelimited(rpi->dev, "Failed to change %s frequency: %d",
+ 				    clk_hw_get_name(hw), ret);
+@@ -189,6 +188,7 @@ static int raspberrypi_register_pllb(str
+ 	if (!data)
+ 		return -ENOMEM;
+ 	data->rpi = rpi;
++	data->id = RPI_FIRMWARE_ARM_CLK_ID;
+ 
+ 	/* All of the PLLs derive from the external oscillator. */
+ 	init.parent_names = (const char *[]){ "osc" };
+@@ -200,8 +200,7 @@ static int raspberrypi_register_pllb(str
+ 	/* Get min & max rates set by the firmware */
+ 	ret = raspberrypi_clock_property(rpi->firmware,
+ 					 RPI_FIRMWARE_GET_MIN_CLOCK_RATE,
+-					 RPI_FIRMWARE_ARM_CLK_ID,
+-					 &min_rate);
++					 data->id, &min_rate);
+ 	if (ret) {
+ 		dev_err(rpi->dev, "Failed to get %s min freq: %d\n",
+ 			init.name, ret);
+@@ -210,8 +209,7 @@ static int raspberrypi_register_pllb(str
+ 
+ 	ret = raspberrypi_clock_property(rpi->firmware,
+ 					 RPI_FIRMWARE_GET_MAX_CLOCK_RATE,
+-					 RPI_FIRMWARE_ARM_CLK_ID,
+-					 &max_rate);
++					 data->id, &max_rate);
+ 	if (ret) {
+ 		dev_err(rpi->dev, "Failed to get %s max freq: %d\n",
+ 			init.name, ret);