CSI cameras are controlled using I2C. On J784S4 EVM, this is routed
to I2C-5, so enable the instance and the TCA6408 GPIO expander
on the bus.
J784S4 EVM schematics: https://www.ti.com/lit/zip/sprr458
Signed-off-by: Vaishnav Achath <[email protected]>
---
V1->V2: Update commit message with schematics.
arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 25 ++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
index 57e7cb8ea2b8..bb2558b68381 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
@@ -297,6 +297,13 @@ J784S4_IOPAD(0x0e4, PIN_INPUT_PULLUP, 0) /* (AP37) I2C0_SDA */
>;
};
+ main_i2c5_pins_default: main-i2c5-default-pins {
+ pinctrl-single,pins = <
+ J784S4_IOPAD(0x01c, PIN_INPUT, 8) /* (AG34) MCAN15_TX.I2C5_SCL */
+ J784S4_IOPAD(0x018, PIN_INPUT, 8) /* (AK36) MCAN14_RX.I2C5_SDA */
+ >;
+ };
+
main_mmc1_pins_default: main-mmc1-default-pins {
bootph-all;
pinctrl-single,pins = <
@@ -761,6 +768,24 @@ exp2: gpio@22 {
};
};
+&main_i2c5 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_i2c5_pins_default>;
+ clock-frequency = <400000>;
+ status = "okay";
+
+ exp5: gpio@20 {
+ compatible = "ti,tca6408";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-line-names = "CSI2_EXP_RSTZ", "CSI2_EXP_A_GPIO0",
+ "CSI2_EXP_A_GPIO1", "CSI2_EXP_A_GPIO3",
+ "CSI2_EXP_B_GPIO1", "CSI2_EXP_B_GPIO2",
+ "CSI2_EXP_B_GPIO3", "CSI2_EXP_B_GPIO4";
+ };
+};
+
&main_sdhci0 {
bootph-all;
/* eMMC */
--
2.34.1
On Feb 08, 2024 at 14:12:47 +0530, Vaishnav Achath wrote:
> CSI cameras are controlled using I2C. On J784S4 EVM, this is routed
> to I2C-5, so enable the instance and the TCA6408 GPIO expander
> on the bus.
>
> J784S4 EVM schematics: https://www.ti.com/lit/zip/sprr458
>
> Signed-off-by: Vaishnav Achath <[email protected]>
Reviewed-by: Jai Luthra <[email protected]>
> ---
>
> V1->V2: Update commit message with schematics.
>
> arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 25 ++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> [...]
>
--
Thanks,
Jai
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