diff options
Diffstat (limited to 'bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0490-media-i2c-ti9x4-increase-i2c-freq-on-master-bus.patch')
| -rw-r--r-- | bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0490-media-i2c-ti9x4-increase-i2c-freq-on-master-bus.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0490-media-i2c-ti9x4-increase-i2c-freq-on-master-bus.patch b/bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0490-media-i2c-ti9x4-increase-i2c-freq-on-master-bus.patch new file mode 100644 index 00000000..adf70f4b --- /dev/null +++ b/bsp/meta-rcar/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0490-media-i2c-ti9x4-increase-i2c-freq-on-master-bus.patch @@ -0,0 +1,48 @@ +From 16082df9fc35be0488ddd3b4280187a9a361b511 Mon Sep 17 00:00:00 2001 +From: Vladimir Barinov <vladimir.barinov@cogentembedded.com> +Date: Wed, 25 Mar 2020 14:29:31 +0300 +Subject: [PATCH] media: i2c: ti9x4: increase i2c freq on master bus + +This increase the serializer (remote) i2c frequency on master bus. +This speed up imager access since deafult timings are 100Khz + +Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com> +--- + drivers/media/i2c/soc_camera/ti9x4.c | 7 ++++--- + 1 file changed, 4 insertions(+), 3 deletions(-) + +diff --git a/drivers/media/i2c/soc_camera/ti9x4.c b/drivers/media/i2c/soc_camera/ti9x4.c +index 627612a..ca86f1fc 100644 +--- a/drivers/media/i2c/soc_camera/ti9x4.c ++++ b/drivers/media/i2c/soc_camera/ti9x4.c +@@ -147,9 +147,6 @@ static void ti9x4_initial_setup(struct i2c_client *client) + + /* Initial setup */ + client->addr = priv->des_addr; /* TI9x4 I2C */ +- reg8_write(client, 0x08, 0x1c); /* I2C glitch filter depth */ +- reg8_write(client, 0x0a, 0x79); /* I2C high pulse width */ +- reg8_write(client, 0x0b, 0x79); /* I2C low pulse width */ + reg8_write(client, 0x0d, 0xb9); /* VDDIO 3.3V */ + switch (priv->csi_rate) { + case 1600: /* REFCLK = 25MHZ */ +@@ -340,6 +337,8 @@ static int ti9x4_initialize(struct i2c_client *client) + switch (priv->ser_id) { + case TI913_ID: + reg8_write(client, 0x0d, 0x55); /* Enable remote GPIO0/1 */ ++ reg8_write(client, 0x11, 0x10); /* I2C high pulse width */ ++ reg8_write(client, 0x12, 0x10); /* I2C low pulse width */ + break; + case TI953_ID: + reg8_write(client, 0x0d, (priv->gpio[0] & 0x1) << 0 | +@@ -354,6 +353,8 @@ static int ti9x4_initialize(struct i2c_client *client) + (!!priv->gpio[1] << 5) | + (!!priv->gpio[2] << 6) | + (!!priv->gpio[3] << 7)); /* Enable serializer GPIOs only for output */ ++ reg8_write(client, 0x0b, 0x10); /* I2C high pulse width */ ++ reg8_write(client, 0x0c, 0x10); /* I2C low pulse width */ + break; + } + client->addr = priv->des_addr; +-- +2.7.4 + |