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, 51 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0515-clk-bcm-rpi-Remove-pllb_arm_lookup-global-pointer.patch b/target/linux/bcm27xx/patches-5.4/950-0515-clk-bcm-rpi-Remove-pllb_arm_lookup-global-pointer.patch
new file mode 100644
index 0000000000..e193b7906a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0515-clk-bcm-rpi-Remove-pllb_arm_lookup-global-pointer.patch
@@ -0,0 +1,51 @@
+From 35be338b9532bb1fda95b9f1123758f57f785f93 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 7 Feb 2020 15:46:24 +0100
+Subject: [PATCH] clk: bcm: rpi: Remove pllb_arm_lookup global pointer
+
+The pllb_arm_lookup pointer in the struct raspberrypi_clk is not used for
+anything but to store the returned pointer to clkdev_hw_create, and is not
+used anywhere else in the driver.
+
+Let's remove that global pointer from the structure.
+
+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 | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -40,7 +40,6 @@ struct raspberrypi_clk {
+ 	unsigned long max_rate;
+ 
+ 	struct clk_hw pllb;
+-	struct clk_lookup *pllb_arm_lookup;
+ };
+ 
+ /*
+@@ -238,6 +237,7 @@ static struct clk_fixed_factor raspberry
+ 
+ static int raspberrypi_register_pllb_arm(struct raspberrypi_clk *rpi)
+ {
++	struct clk_lookup *pllb_arm_lookup;
+ 	int ret;
+ 
+ 	ret = devm_clk_hw_register(rpi->dev, &raspberrypi_clk_pllb_arm.hw);
+@@ -246,9 +246,9 @@ static int raspberrypi_register_pllb_arm
+ 		return ret;
+ 	}
+ 
+-	rpi->pllb_arm_lookup = clkdev_hw_create(&raspberrypi_clk_pllb_arm.hw,
+-						NULL, "cpu0");
+-	if (!rpi->pllb_arm_lookup) {
++	pllb_arm_lookup = clkdev_hw_create(&raspberrypi_clk_pllb_arm.hw,
++					   NULL, "cpu0");
++	if (!pllb_arm_lookup) {
+ 		dev_err(rpi->dev, "Failed to initialize pllb_arm_lookup\n");
+ 		return -ENOMEM;
+ 	}