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, 79 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0151-media-ov5647-Add-support-for-non-continuous-clock-mo.patch b/target/linux/bcm27xx/patches-5.4/950-0151-media-ov5647-Add-support-for-non-continuous-clock-mo.patch
new file mode 100644
index 0000000000..0fc4fa3420
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0151-media-ov5647-Add-support-for-non-continuous-clock-mo.patch
@@ -0,0 +1,79 @@
+From fd539af952dfb820dc3d285a4f1311ee17bdbc79 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:56:47 +0000
+Subject: [PATCH] media: ov5647: Add support for non-continuous clock
+ mode
+
+The driver was only supporting continuous clock mode
+although this was not stated anywhere.
+Non-continuous clock saves a small amount of power and
+on some SoCs is easier to interface with.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/media/i2c/ov5647.c | 17 ++++++++++++++---
+ 1 file changed, 14 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -44,6 +44,7 @@
+ #define PWDN_ACTIVE_DELAY_MS	20
+ 
+ #define MIPI_CTRL00_CLOCK_LANE_GATE		BIT(5)
++#define MIPI_CTRL00_LINE_SYNC_ENABLE		BIT(4)
+ #define MIPI_CTRL00_BUS_IDLE			BIT(2)
+ #define MIPI_CTRL00_CLOCK_LANE_DISABLE		BIT(0)
+ 
+@@ -95,6 +96,7 @@ struct ov5647 {
+ 	int				power_count;
+ 	struct clk			*xclk;
+ 	struct gpio_desc		*pwdn;
++	unsigned int			flags;
+ };
+ 
+ static inline struct ov5647 *to_state(struct v4l2_subdev *sd)
+@@ -269,9 +271,15 @@ static int ov5647_set_virtual_channel(st
+ 
+ static int ov5647_stream_on(struct v4l2_subdev *sd)
+ {
++	struct ov5647 *ov5647 = to_state(sd);
++	u8 val = MIPI_CTRL00_BUS_IDLE;
+ 	int ret;
+ 
+-	ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, MIPI_CTRL00_BUS_IDLE);
++	if (ov5647->flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK)
++		val |= MIPI_CTRL00_CLOCK_LANE_GATE |
++		       MIPI_CTRL00_LINE_SYNC_ENABLE;
++
++	ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, val);
+ 	if (ret < 0)
+ 		return ret;
+ 
+@@ -568,7 +576,7 @@ static const struct v4l2_subdev_internal
+ 	.open = ov5647_open,
+ };
+ 
+-static int ov5647_parse_dt(struct device_node *np)
++static int ov5647_parse_dt(struct device_node *np, struct ov5647 *sensor)
+ {
+ 	struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
+ 	struct device_node *ep;
+@@ -581,6 +589,9 @@ static int ov5647_parse_dt(struct device
+ 
+ 	ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg);
+ 
++	if (!ret)
++		sensor->flags = bus_cfg.bus.mipi_csi2.flags;
++
+ 	of_node_put(ep);
+ 	return ret;
+ }
+@@ -599,7 +610,7 @@ static int ov5647_probe(struct i2c_clien
+ 		return -ENOMEM;
+ 
+ 	if (IS_ENABLED(CONFIG_OF) && np) {
+-		ret = ov5647_parse_dt(np);
++		ret = ov5647_parse_dt(np, sensor);
+ 		if (ret) {
+ 			dev_err(dev, "DT parsing error: %d\n", ret);
+ 			return ret;