[PATCH v4 10/15] ARM: dts: sun8i: v3s: Add nodes for MIPI CSI-2 support

Paul Kocialkowski
2020-12-31T14:32:25Z

MIPI CSI-2 is supported on the V3s with an A31-based MIPI CSI-2 bridge
controller. The controller uses a separate D-PHY, which is the same
that is otherwise used for MIPI DSI, but used in Rx mode.

On the V3s, the CSI0 controller is dedicated to MIPI CSI-2 as it does
not have access to any parallel interface pins.

Add all the necessary nodes (CSI0, MIPI CSI-2 bridge and D-PHY) to
support the MIPI CSI-2 interface.

Note that a fwnode graph link is created between CSI0 and MIPI CSI-2
even when no sensor is connected. This will result in a probe failure
for the controller as long as no sensor is connected but this is fine
since no other interface is available.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
arch/arm/boot/dts/sun8i-v3s.dtsi | 67 ++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi
index 7b2d684aeb97..b7f2bcd25c86 100644
--- a/arch/arm/boot/dts/sun8i-v3s.dtsi
+++ b/arch/arm/boot/dts/sun8i-v3s.dtsi
@@ -530,6 +530,31 @@ spi0: spi@1c68000 {
#size-cells = <0>;
};

+ csi0: camera@1cb0000 {
+ compatible = "allwinner,sun8i-v3s-csi";
+ reg = <0x01cb0000 0x1000>;
+ interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_CSI>,
+ <&ccu CLK_CSI1_SCLK>,
+ <&ccu CLK_DRAM_CSI>;
+ clock-names = "bus", "mod", "ram";
+ resets = <&ccu RST_BUS_CSI>;
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@1 {
+ reg = <1>;
+
+ csi0_in_mipi_csi2: endpoint {
+ remote-endpoint = <&mipi_csi2_out_csi0>;
+ };
+ };
+ };
+ };
+
csi1: camera@1cb4000 {
compatible = "allwinner,sun8i-v3s-csi";
reg = <0x01cb4000 0x3000>;
@@ -552,5 +577,47 @@ gic: interrupt-controller@1c81000 {
#interrupt-cells = <3>;
interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
};
+
+ mipi_csi2: csi@1cb1000 {
+ compatible = "allwinner,sun8i-v3s-mipi-csi2",
+ "allwinner,sun6i-a31-mipi-csi2";
+ reg = <0x01cb1000 0x1000>;
+ interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_CSI>,
+ <&ccu CLK_CSI1_SCLK>;
+ clock-names = "bus", "mod";
+ resets = <&ccu RST_BUS_CSI>;
+ status = "disabled";
+
+ phys = <&dphy>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ mipi_csi2_in: port@0 {
+ reg = <0>;
+ };
+
+ mipi_csi2_out: port@1 {
+ reg = <1>;
+
+ mipi_csi2_out_csi0: endpoint {
+ remote-endpoint = <&csi0_in_mipi_csi2>;
+ };
+ };
+ };
+ };
+
+ dphy: d-phy@1cb2000 {
+ compatible = "allwinner,sun6i-a31-mipi-dphy";
+ reg = <0x01cb2000 0x1000>;
+ clocks = <&ccu CLK_BUS_CSI>,
+ <&ccu CLK_MIPI_CSI>;
+ clock-names = "bus", "mod";
+ resets = <&ccu RST_BUS_CSI>;
+ status = "disabled";
+ #phy-cells = <0>;
+ };
};
};
--
2.29.2