Some camera modules have the SoC feeding a master clock to the sensor
instead of having a standalone crystal. This clock signal is generated
from the clock control unit and output from the CSI MCLK function of
pin PE1.
Add a pinmux setting for it for camera sensors to reference.
Signed-off-by: Jagan Teki <[email protected]>
---
Changes for v2:
- add /omit-if-no-ref/
- add pin name as csi-mclk-pin instead of csi-mclk
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 728f70018c51..8c5b521e6389 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -595,6 +595,12 @@
function = "csi";
};
+ /omit-if-no-ref/
+ csi_mclk_pin: csi-mclk-pin {
+ pins = "PE1";
+ function = "csi";
+ };
+
i2c0_pins: i2c0-pins {
pins = "PH0", "PH1";
function = "i2c0";
--
2.18.0.321.gffc6fa0e3
Amarula A64-Relic board by default bound with OV5640 camera,
so add support for it with below pin information.
- PE13, PE12 via i2c-gpio bitbanging
- CLK_CSI_MCLK as external clock
- PE1 as external clock pin muxing
- ALDO1 as AVDD supply
- DLDO3 as DOVDD supply
- ELDO3 as DVDD supply
- PE14 gpio for reset pin
- PE15 gpio for powerdown pin
Signed-off-by: Jagan Teki <[email protected]>
---
Changes for v2:
- use node name as i2c instead of i2c-csi
- drop i2c gpio pin documentation
- drop unneeded address, size properties
.../allwinner/sun50i-a64-amarula-relic.dts | 50 +++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
index bd31a4385bc1..7bb1d93f5e65 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
@@ -22,6 +22,41 @@
stdout-path = "serial0:115200n8";
};
+ i2c {
+ compatible = "i2c-gpio";
+ sda-gpios = <&pio 4 13 GPIO_ACTIVE_HIGH>;
+ scl-gpios = <&pio 4 12 GPIO_ACTIVE_HIGH>;
+ i2c-gpio,delay-us = <5>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ov5640: camera@3c {
+ compatible = "ovti,ov5640";
+ reg = <0x3c>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&csi_mclk_pin>;
+ clocks = <&ccu CLK_CSI_MCLK>;
+ clock-names = "xclk";
+
+ AVDD-supply = <®_aldo1>;
+ DOVDD-supply = <®_dldo3>;
+ DVDD-supply = <®_eldo3>;
+ reset-gpios = <&pio 4 14 GPIO_ACTIVE_LOW>; /* CSI-RST-R: PE14 */
+ powerdown-gpios = <&pio 4 15 GPIO_ACTIVE_HIGH>; /* CSI-STBY-R: PE15 */
+
+ port {
+ ov5640_ep: endpoint {
+ remote-endpoint = <&csi_ep>;
+ bus-width = <8>;
+ hsync-active = <1>; /* Active high */
+ vsync-active = <0>; /* Active low */
+ data-active = <1>; /* Active high */
+ pclk-sample = <1>; /* Rising */
+ };
+ };
+ };
+ };
+
wifi_pwrseq: wifi-pwrseq {
compatible = "mmc-pwrseq-simple";
clocks = <&rtc 1>;
@@ -30,6 +65,21 @@
};
};
+&csi {
+ status = "okay";
+
+ port {
+ csi_ep: endpoint {
+ remote-endpoint = <&ov5640_ep>;
+ bus-width = <8>;
+ hsync-active = <1>; /* Active high */
+ vsync-active = <0>; /* Active low */
+ data-active = <1>; /* Active high */
+ pclk-sample = <1>; /* Rising */
+ };
+ };
+};
+
&ehci0 {
status = "okay";
};
--
2.18.0.321.gffc6fa0e3
On Thu, Apr 18, 2019 at 07:22:32PM +0530, Jagan Teki wrote:
> Amarula A64-Relic board by default bound with OV5640 camera,
> so add support for it with below pin information.
>
> - PE13, PE12 via i2c-gpio bitbanging
> - CLK_CSI_MCLK as external clock
> - PE1 as external clock pin muxing
> - ALDO1 as AVDD supply
> - DLDO3 as DOVDD supply
> - ELDO3 as DVDD supply
> - PE14 gpio for reset pin
> - PE15 gpio for powerdown pin
>
> Signed-off-by: Jagan Teki <[email protected]>
Applied both, thanks
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com