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, 109 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0823-media-i2c-imx290-Add-RAW12-mode-support.patch b/target/linux/bcm27xx/patches-5.4/950-0823-media-i2c-imx290-Add-RAW12-mode-support.patch
new file mode 100644
index 0000000000..6e437350c8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0823-media-i2c-imx290-Add-RAW12-mode-support.patch
@@ -0,0 +1,109 @@
+From 9f6a310ab3b466940c0a15260987d4cfe868a79a Mon Sep 17 00:00:00 2001
+From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Date: Fri, 12 Jun 2020 15:53:52 +0200
+Subject: [PATCH] media: i2c: imx290: Add RAW12 mode support
+
+Commit c566ac01ceaa02450acc155201772c0623530e76 upstream.
+
+IMX290 is capable of outputting frames in both Raw Bayer (packed) 10 and
+12 bit formats. Since the driver already supports RAW10 mode, let's add
+the missing RAW12 mode as well.
+
+Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
+Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+---
+ drivers/media/i2c/imx290.c | 36 +++++++++++++++++++++++++++++++++---
+ 1 file changed, 33 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -67,6 +67,7 @@ struct imx290 {
+ 	struct clk *xclk;
+ 	struct regmap *regmap;
+ 	u8 nlanes;
++	u8 bpp;
+ 
+ 	struct v4l2_subdev sd;
+ 	struct v4l2_fwnode_endpoint ep;
+@@ -86,10 +87,12 @@ struct imx290 {
+ 
+ struct imx290_pixfmt {
+ 	u32 code;
++	u8 bpp;
+ };
+ 
+ static const struct imx290_pixfmt imx290_formats[] = {
+-	{ MEDIA_BUS_FMT_SRGGB10_1X10 },
++	{ MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
++	{ MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
+ };
+ 
+ static const struct regmap_config imx290_regmap_config = {
+@@ -257,6 +260,18 @@ static const struct imx290_regval imx290
+ 	{ 0x300b, 0x00},
+ };
+ 
++static const struct imx290_regval imx290_12bit_settings[] = {
++	{ 0x3005, 0x01 },
++	{ 0x3046, 0x01 },
++	{ 0x3129, 0x00 },
++	{ 0x317c, 0x00 },
++	{ 0x31ec, 0x0e },
++	{ 0x3441, 0x0c },
++	{ 0x3442, 0x0c },
++	{ 0x300a, 0xf0 },
++	{ 0x300b, 0x00 },
++};
++
+ /* supported link frequencies */
+ #define FREQ_INDEX_1080P	0
+ #define FREQ_INDEX_720P		1
+@@ -478,7 +493,12 @@ static int imx290_set_ctrl(struct v4l2_c
+ 		} else {
+ 			imx290_write_reg(imx290, IMX290_PGCTRL, 0x00);
+ 			msleep(10);
+-			imx290_write_reg(imx290, IMX290_BLKLEVEL_LOW, 0x3c);
++			if (imx290->bpp == 10)
++				imx290_write_reg(imx290, IMX290_BLKLEVEL_LOW,
++						 0x3c);
++			else /* 12 bits per pixel */
++				imx290_write_reg(imx290, IMX290_BLKLEVEL_LOW,
++						 0xf0);
+ 			imx290_write_reg(imx290, IMX290_BLKLEVEL_HIGH, 0x00);
+ 		}
+ 		break;
+@@ -550,7 +570,7 @@ static u64 imx290_calc_pixel_rate(struct
+ 
+ 	/* pixel rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
+ 	pixel_rate = link_freq * 2 * nlanes;
+-	do_div(pixel_rate, 10);
++	do_div(pixel_rate, imx290->bpp);
+ 	return pixel_rate;
+ }
+ 
+@@ -587,6 +607,7 @@ static int imx290_set_fmt(struct v4l2_su
+ 	} else {
+ 		format = &imx290->current_format;
+ 		imx290->current_mode = mode;
++		imx290->bpp = imx290_formats[i].bpp;
+ 
+ 		if (imx290->link_freq)
+ 			__v4l2_ctrl_s_ctrl(imx290->link_freq,
+@@ -629,6 +650,15 @@ static int imx290_write_current_format(s
+ 		if (ret < 0) {
+ 			dev_err(imx290->dev, "Could not set format registers\n");
+ 			return ret;
++		}
++		break;
++	case MEDIA_BUS_FMT_SRGGB12_1X12:
++		ret = imx290_set_register_array(imx290, imx290_12bit_settings,
++						ARRAY_SIZE(
++							imx290_12bit_settings));
++		if (ret < 0) {
++			dev_err(imx290->dev, "Could not set format registers\n");
++			return ret;
+ 		}
+ 		break;
+ 	default: