[PATCH] arm64: dts: rockchip: configure hdmirx in Rock 5 ITX

[Pedro Alves]

The Radxa Rock 5 ITX board exposes an HDMI input exactly the same way as
the Rock 5B, but this was not reflected in its DTS.

Change the rk3588-rock-5-itx to configure and enable the hdmi_receiver
and hdmi_receiver_cma nodes.

One of the existing pinctrl labels, hdmirx_det, was renamed into
hdmirx_hpd to match the other boards. The _det name seems to have come
from the downstream kernel sources, where the other boards also have
that name. Changing it to hdmirx_hpd in order to be consistent with the
other rk3588 boards in the kernel.

The configurations were confirmed to be identical on the downstream
Radxa kernel, and this has been tested to work on a Rock 5 ITX board
running kernel 6.19.3.

Signed-off-by: Pedro Alves <pta2002 at pta2002.com>
---
Tested with the following commands:

v4l2-ctl --verbose -d /dev/video4 \
  --set-fmt-video=width=3840,height=2160,pixelformat='BGR3' \
  --stream-mmap=4 --stream-skip=3 --stream-count=20 \
  --stream-to=hdmiin.raw --stream-poll

ffmpeg -f rawvideo -vcodec rawvideo -s 3840x2160 -r 30 -pix_fmt bgr24 \
  -i hdmiin.raw output.mp4
---
 arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
index 172aeabba72a..9f4f31d1ca94 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
@@ -349,6 +349,18 @@ &hdmi1_sound {
 	status = "okay";
 };
 
+&hdmi_receiver_cma {
+	status = "okay";
+};
+
+&hdmi_receiver {
+	pinctrl-0 = <&hdmim1_rx_cec &hdmim1_rx_hpdin &hdmim1_rx_scl &hdmim1_rx_sda &hdmirx_hpd>;
+	pinctrl-names = "default";
+
+	hpd-gpios = <&gpio1 RK_PC6 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
+
 &hdptxphy1 {
 	status = "okay";
 };
@@ -746,7 +758,7 @@ vbus5v0_typec_en: vbus5v0-typec-en {
 	};
 
 	hdmirx {
-		hdmirx_det: hdmirx-det {
+		hdmirx_hpd: hdmirx-5v-detection {
 			rockchip,pins = <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};

---
base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b
change-id: 20260303-radxa-r5-itx-hdmirx-f4645e64f8c3

Best regards,
-- 
Pedro Alves <pta2002 at pta2002.com>