diff options
Diffstat (limited to 'bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0489-media-i2c-max9286-increase-i2c-freq-inside-GMSL-cahn.patch')
| -rw-r--r-- | bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0489-media-i2c-max9286-increase-i2c-freq-inside-GMSL-cahn.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0489-media-i2c-max9286-increase-i2c-freq-inside-GMSL-cahn.patch b/bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0489-media-i2c-max9286-increase-i2c-freq-inside-GMSL-cahn.patch new file mode 100644 index 00000000..7d10e4ce --- /dev/null +++ b/bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0489-media-i2c-max9286-increase-i2c-freq-inside-GMSL-cahn.patch @@ -0,0 +1,36 @@ +From 07aec3b12f833316963d45681f2dcbf688973621 Mon Sep 17 00:00:00 2001 +From: Vladimir Barinov <vladimir.barinov@cogentembedded.com> +Date: Wed, 25 Mar 2020 14:34:14 +0300 +Subject: [PATCH] media: i2c: max9286: increase i2c freq inside GMSL cahnnel + +This slightly (10%) increases the i2c transaction speed over GMSL. + +Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com> +--- + drivers/media/i2c/soc_camera/max9286.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/drivers/media/i2c/soc_camera/max9286.c b/drivers/media/i2c/soc_camera/max9286.c +index 05247ff..28bd3c3 100644 +--- a/drivers/media/i2c/soc_camera/max9286.c ++++ b/drivers/media/i2c/soc_camera/max9286.c +@@ -31,7 +31,7 @@ + #define MAXIM_I2C_I2C_SPEED_105KHZ (0x3 << 2) /* 105 kbps */ + #define MAXIM_I2C_I2C_SPEED_085KHZ (0x2 << 2) /* 84.7 kbps */ + #define MAXIM_I2C_I2C_SPEED_028KHZ (0x1 << 2) /* 28.3 kbps */ +-#define MAXIM_I2C_I2C_SPEED MAXIM_I2C_I2C_SPEED_339KHZ ++#define MAXIM_I2C_I2C_SPEED MAXIM_I2C_I2C_SPEED_837KHZ + + struct max9286_priv { + struct v4l2_subdev sd[4]; +@@ -270,6 +270,7 @@ static void max9286_postinit(struct i2c_client *client, int addr) + reg8_write(client, 0x0b, priv->csi2_outord); /* CSI2 output order */ + reg8_write(client, 0x15, 0x9b); /* enable CSI output, VC is set accordingly to Link number, BIT7 magic must be set */ + reg8_write(client, 0x1b, priv->switchin | priv->links_mask); /* coax polarity, enable equalizer for CAMs */ ++ reg8_write(client, 0x34, 0x22 | MAXIM_I2C_I2C_SPEED); /* disable artificial ACK, I2C speed set */ + usleep_range(5000, 5500); /* wait 2ms after any change of reverse channel settings */ + + if (strcmp(priv->fsync_mode, "manual") == 0) { +-- +2.7.4 + |