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, 45 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0516-clk-bcm-rpi-Switch-to-clk_hw_register_clkdev.patch b/target/linux/bcm27xx/patches-5.4/950-0516-clk-bcm-rpi-Switch-to-clk_hw_register_clkdev.patch
new file mode 100644
index 0000000000..e4a129f233
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0516-clk-bcm-rpi-Switch-to-clk_hw_register_clkdev.patch
@@ -0,0 +1,45 @@
+From 2d1c30a79cb9d390d2425852ff8c9527c31b3ab8 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 12 Feb 2020 14:21:45 +0100
+Subject: [PATCH] clk: bcm: rpi: Switch to clk_hw_register_clkdev
+
+Since we don't care about retrieving the clk_lookup structure pointer
+returned by clkdev_hw_create, we can just use the clk_hw_register_clkdev
+function.
+
+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 | 11 +++++------
+ 1 file changed, 5 insertions(+), 6 deletions(-)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -237,7 +237,6 @@ 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);
+@@ -246,11 +245,11 @@ static int raspberrypi_register_pllb_arm
+ 		return ret;
+ 	}
+ 
+-	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;
++	ret = clk_hw_register_clkdev(&raspberrypi_clk_pllb_arm.hw,
++				     NULL, "cpu0");
++	if (ret) {
++		dev_err(rpi->dev, "Failed to initialize clkdev\n");
++		return ret;
+ 	}
+ 
+ 	return 0;