bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0591-clk-bcm-rpi-Add-the-BCM283x-pixel-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0591-clk-bcm-rpi-Add-the-BCM283x-pixel-clock.patch
new file mode 100644
index 0000000000..6b663b96d3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0591-clk-bcm-rpi-Add-the-BCM283x-pixel-clock.patch
@@ -0,0 +1,26 @@
+From 679ce500f576c5c07a18e5bc72347177e4ae3a98 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 13:53:36 +0000
+Subject: [PATCH] clk: bcm: rpi: Add the BCM283x pixel clock.
+
+The clk-bcm2835 handling of the pixel clock does not function
+correctly when the HDMI power domain is disabled.
+
+The firmware supports it correctly, so add it to the
+firmware clock driver.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -276,6 +276,7 @@ static int raspberrypi_discover_clocks(s
+ 		case RPI_FIRMWARE_HEVC_CLK_ID:
+ 		case RPI_FIRMWARE_PIXEL_BVB_CLK_ID:
+ 		case RPI_FIRMWARE_VEC_CLK_ID:
++		case RPI_FIRMWARE_PIXEL_CLK_ID:
+ 			hw = raspberrypi_clk_register(rpi, clks->parent,
+ 						      clks->id);
+ 			if (IS_ERR(hw))