Re: [PATCH 9/9] arm64: dts: ti: k3-am69-sk: Add overlay for IMX219
From: Vaishnav Achath
Date: Thu Feb 08 2024 - 03:57:28 EST
Hi Jai, Andrew,
On 31/01/24 13:45, Jai Luthra wrote:
Hi Vaishnav,
Thanks for the patch.
On Jan 29, 2024 at 18:57:42 +0530, Vaishnav Achath wrote:
RPi v2 Camera (IMX219) is an 8MP camera that can be used with SK-AM69
through the 22-pin CSI-RX connector.
Same overlay can be used across AM68 SK, TDA4VM SK boards that have a
15/22-pin FFC connector. Also enable build testing and symbols for
all the three platforms.
In that case, the overlay should be named something generic following
how it is done for SK-AM62* family of boards.
IMO, it would also make more sense to have separate overlays for CSI0
and CSI1 ports, unless there are no usecases to plug-in different
sensors on the board.
Even if that is done later, at least this overlay should be named in a
way to make it clear it enables 2x IMX219 on both CSI-RX ports, to avoid
confusion.
So, something like k3-<jacinto?>-sk-csi2-dual-imx219.dtso
This will leave room for a CSI1 only overlay to be called
k3-<>-sk-csi2-1-<sensor>.dtso
Thank you for the review, for now I have renamed the overlay to the
first supported platform(j721e-sk), like AM62X family it is difficult
to pick a common name for these platforms (TDA4VM SK, AM68 SK, AM69 SK),
also jacinto-*.dtso gives the wrong impression that these might work
with the EVMs, so for now I have picked the name to follow the first
supported platfor j721e-sk and clarified in comments and commit message
that this can be reused with other platforms.
Signed-off-by: Vaishnav Achath <vaishnav.a@xxxxxx>
---
arch/arm64/boot/dts/ti/Makefile | 6 +
.../boot/dts/ti/k3-am69-sk-csi2-imx219.dtso | 124 ++++++++++++++++++
2 files changed, 130 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am69-sk-csi2-imx219.dtso
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 52c1dc910308..9fc8d68f7d26 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -80,6 +80,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm-pcie1-ep.dtbo
# Boards with J784s4 SoC
dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am69-sk-csi2-imx219.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb
# Build time test only, enabled by CONFIG_OF_ALL_DTBS
@@ -105,6 +106,8 @@ k3-am642-tqma64xxl-mbax4xxl-sdcard-dtbs := \
k3-am642-tqma64xxl-mbax4xxl.dtb k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo
k3-am642-tqma64xxl-mbax4xxl-wlan-dtbs := \
k3-am642-tqma64xxl-mbax4xxl.dtb k3-am64-tqma64xxl-mbax4xxl-wlan.dtbo
+k3-am69-sk-csi2-imx219-dtbs := k3-am69-sk.dtb \
+ k3-am69-sk-csi2-imx219.dtbo
Andrew already pointed out that the base dtb should be added in the dtb-
+= entry at the end of this section.
Along with that, I think the overlay should be build-tested for each
base DTB (AM68, TDA4VM) it is applicable on. Same is already done for
the shared IMX219/OV5640 overlays between SK-AM62 and SK-AM62A.
Fixed in V2:
https://lore.kernel.org/all/20240208084254.295289-1-vaishnav.a@xxxxxx/
Thanks and Regards,
Vaishnav
k3-j721e-evm-pcie0-ep-dtbs := k3-j721e-common-proc-board.dtb \
k3-j721e-evm-pcie0-ep.dtbo
k3-j721s2-evm-pcie1-ep-dtbs := k3-j721s2-common-proc-board.dtb \
@@ -130,5 +133,8 @@ DTC_FLAGS_k3-am62-lp-sk += -@
DTC_FLAGS_k3-am62a7-sk += -@
DTC_FLAGS_k3-am642-tqma64xxl-mbax4xxl += -@
DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@
+DTC_FLAGS_k3-am68-sk-base-board += -@
+DTC_FLAGS_k3-am69-sk += -@
DTC_FLAGS_k3-j721e-common-proc-board += -@
DTC_FLAGS_k3-j721s2-common-proc-board += -@
+DTC_FLAGS_k3-j721e-sk += -@
diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk-csi2-imx219.dtso b/arch/arm64/boot/dts/ti/k3-am69-sk-csi2-imx219.dtso
new file mode 100644
index 000000000000..4cd1d8d5004a
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am69-sk-csi2-imx219.dtso
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * DT Overlay for RPi Camera V2.1 (Sony IMX219) interfaced with CSI2 on AM68-SK board.
Overlay name says AM69 but comment says AM68 here.
+ * https://datasheets.raspberrypi.org/camera/camera-v2-schematic.pdf
+ *
+ * Copyright (C) 2023 Texas Instruments Incorporated - https://www.ti.com/
s/2023/2024
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include "k3-pinctrl.h"
+
+&{/} {
+ clk_imx219_fixed: imx219-xclk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ };
+};
+
+&csi_mux {
+ idle-state = <1>;
+};
+
+/* CAM0 I2C */
+&cam0_i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ imx219_0: imx219_0@10 {
+ compatible = "sony,imx219";
+ reg = <0x10>;
+
+ clocks = <&clk_imx219_fixed>;
+ clock-names = "xclk";
+
+ port {
+ csi2_cam0: endpoint {
+ remote-endpoint = <&csi2rx0_in_sensor>;
+ link-frequencies = /bits/ 64 <456000000>;
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+};
+
+/* CAM1 I2C */
+&cam1_i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ imx219_1: imx219_1@10 {
+ compatible = "sony,imx219";
+ reg = <0x10>;
+
+ clocks = <&clk_imx219_fixed>;
+ clock-names = "xclk";
+
+ port {
+ csi2_cam1: endpoint {
+ remote-endpoint = <&csi2rx1_in_sensor>;
+ link-frequencies = /bits/ 64 <456000000>;
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+};
+
+
+&cdns_csi2rx0 {
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ csi0_port0: port@0 {
+ reg = <0>;
+ status = "okay";
+
+ csi2rx0_in_sensor: endpoint {
+ remote-endpoint = <&csi2_cam0>;
+ bus-type = <4>; /* CSI2 DPHY. */
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+};
+
+&dphy0 {
+ status = "okay";
+};
+
+&ti_csi2rx0 {
+ status = "okay";
+};
+
+&cdns_csi2rx1 {
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ csi1_port0: port@0 {
+ reg = <0>;
+ status = "okay";
+
+ csi2rx1_in_sensor: endpoint {
+ remote-endpoint = <&csi2_cam1>;
+ bus-type = <4>; /* CSI2 DPHY. */
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+};
+
+&dphy1 {
+ status = "okay";
+};
+
+&ti_csi2rx1 {
+ status = "okay";
+};
\ No newline at end of file
--
2.34.1