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, 41 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0824-media-i2c-imx258-Issue-reset-before-starting-streami.patch b/target/linux/bcm27xx/patches-5.15/950-0824-media-i2c-imx258-Issue-reset-before-starting-streami.patch
new file mode 100644
index 0000000000..debe37b8f3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0824-media-i2c-imx258-Issue-reset-before-starting-streami.patch
@@ -0,0 +1,41 @@
+From 4207b34a5b5831d5fea177a1a005eec692cc3722 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 31 Mar 2022 17:12:12 +0100
+Subject: [PATCH] media: i2c: imx258: Issue reset before starting
+ streaming
+
+Whilst not documented, register 0x0103 bit 0 is the soft
+reset for the sensor, so send it before trying to configure
+the sensor.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -20,6 +20,8 @@
+ #define IMX258_MODE_STANDBY		0x00
+ #define IMX258_MODE_STREAMING		0x01
+ 
++#define IMX258_REG_RESET		0x0103
++
+ /* Chip ID */
+ #define IMX258_REG_CHIP_ID		0x0016
+ #define IMX258_CHIP_ID			0x0258
+@@ -1319,6 +1321,14 @@ static int imx258_start_streaming(struct
+ 	const struct imx258_link_freq_config *link_freq_cfg;
+ 	int ret, link_freq_index;
+ 
++	ret = imx258_write_reg(imx258, IMX258_REG_RESET, IMX258_REG_VALUE_08BIT,
++			       0x01);
++	if (ret) {
++		dev_err(&client->dev, "%s failed to reset sensor\n", __func__);
++		return ret;
++	}
++	usleep_range(10000, 15000);
++
+ 	/* Setup PLL */
+ 	link_freq_index = imx258->cur_mode->link_freq_index;
+ 	link_freq_cfg = &imx258->link_freq_configs[link_freq_index];