[PATCH 2/2] arm64: dts: ti: k3-am68-sk-base-board: Add HDMI support
From: Jayesh Choudhary
Date: Thu Aug 03 2023 - 04:24:52 EST
AM68-SK has an HDMI port. The bridge used is TI-TFP410.
Add support to enable the connection:
DSS => TI TFP410 DPI-to-DVI Bridge => HDMI connector
Signed-off-by: Jayesh Choudhary <j-choudhary@xxxxxx>
---
.../boot/dts/ti/k3-am68-sk-base-board.dts | 138 ++++++++++++++++++
1 file changed, 138 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
index 21ad49cfa7ee..56caa4ee6554 100644
--- a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
@@ -122,6 +122,52 @@ transceiver4: can-phy3 {
#phy-cells = <0>;
max-bitrate = <5000000>;
};
+
+ connector-hdmi {
+ compatible = "hdmi-connector";
+ label = "hdmi";
+ type = "a";
+ pinctrl-names = "default";
+ pinctrl-0 = <&hdmi_hpd_pins_default>;
+ ddc-i2c-bus = <&mcu_i2c1>;
+ /* HDMI_HPD */
+ hpd-gpios = <&main_gpio0 0 GPIO_ACTIVE_HIGH>;
+
+ port {
+ hdmi_connector_in: endpoint {
+ remote-endpoint = <&tfp410_out>;
+ };
+ };
+ };
+
+ bridge-dvi {
+ compatible = "ti,tfp410";
+ /* HDMI_PDn */
+ powerdown-gpios = <&exp2 0 GPIO_ACTIVE_LOW>;
+ ti,deskew = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ tfp410_in: endpoint {
+ remote-endpoint = <&dpi_out0>;
+ pclk-sample = <1>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ tfp410_out: endpoint {
+ remote-endpoint = <&hdmi_connector_in>;
+ };
+ };
+ };
+ };
};
&main_pmx0 {
@@ -202,6 +248,45 @@ J721S2_IOPAD(0x0cc, PIN_INPUT, 7) /* (AE27) SPI0_CS0.GPIO0_51 */
J721S2_IOPAD(0x08c, PIN_INPUT, 7) /* (T25) MCASP0_AXR7.GPIO0_35 */
>;
};
+
+ dss_vout0_pins_default: dss-vout0-default-pins {
+ pinctrl-single,pins = <
+ J721S2_IOPAD(0x074, PIN_OUTPUT, 2) /* (R28) MCAN2_TX.VOUT0_DATA0 */
+ J721S2_IOPAD(0x070, PIN_OUTPUT, 2) /* (R27) MCAN1_RX.VOUT0_DATA1 */
+ J721S2_IOPAD(0x04c, PIN_OUTPUT, 2) /* (V27) MCASP1_AXR1.VOUT0_DATA10 */
+ J721S2_IOPAD(0x048, PIN_OUTPUT, 2) /* (AB27) MCASP0_AXR2.VOUT0_DATA11 */
+ J721S2_IOPAD(0x044, PIN_OUTPUT, 2) /* (Y26) MCASP0_AXR1.VOUT0_DATA12 */
+ J721S2_IOPAD(0x040, PIN_OUTPUT, 2) /* (AC28) MCASP0_AXR0.VOUT0_DATA13 */
+ J721S2_IOPAD(0x03c, PIN_OUTPUT, 2) /* (U27) MCASP0_AFSX.VOUT0_DATA14 */
+ J721S2_IOPAD(0x038, PIN_OUTPUT, 2) /* (AB28) MCASP0_ACLKX.VOUT0_DATA15 */
+ J721S2_IOPAD(0x0c8, PIN_OUTPUT, 2) /* (AD28) EXT_REFCLK1.VOUT0_DATA16 */
+ J721S2_IOPAD(0x030, PIN_OUTPUT, 2) /* (T26) GPIO0_12.VOUT0_DATA17 */
+ J721S2_IOPAD(0x02c, PIN_OUTPUT, 2) /* (V23) GPIO0_11.VOUT0_DATA18 */
+ J721S2_IOPAD(0x028, PIN_OUTPUT, 2) /* (AB24) MCAN16_RX.VOUT0_DATA19 */
+ J721S2_IOPAD(0x07c, PIN_OUTPUT, 2) /* (T27) MCASP0_AXR3.VOUT0_DATA2 */
+ J721S2_IOPAD(0x024, PIN_OUTPUT, 2) /* (Y28) MCAN16_TX.VOUT0_DATA20 */
+ J721S2_IOPAD(0x020, PIN_OUTPUT, 2) /* (AA23) MCAN15_RX.VOUT0_DATA21 */
+ J721S2_IOPAD(0x01c, PIN_OUTPUT, 2) /* (Y24) MCAN15_TX.VOUT0_DATA22 */
+ J721S2_IOPAD(0x018, PIN_OUTPUT, 2) /* (W23) MCAN14_RX.VOUT0_DATA23 */
+ J721S2_IOPAD(0x068, PIN_OUTPUT, 2) /* (U28) MCAN0_RX.VOUT0_DATA3 */
+ J721S2_IOPAD(0x064, PIN_OUTPUT, 2) /* (W28) MCAN0_TX.VOUT0_DATA4 */
+ J721S2_IOPAD(0x060, PIN_OUTPUT, 2) /* (AC27) MCASP2_AXR1.VOUT0_DATA5 */
+ J721S2_IOPAD(0x05c, PIN_OUTPUT, 2) /* (AA26) MCASP2_AXR0.VOUT0_DATA6 */
+ J721S2_IOPAD(0x058, PIN_OUTPUT, 2) /* (AA27) MCASP2_AFSX.VOUT0_DATA7 */
+ J721S2_IOPAD(0x054, PIN_OUTPUT, 2) /* (Y27) MCASP2_ACLKX.VOUT0_DATA8 */
+ J721S2_IOPAD(0x050, PIN_OUTPUT, 2) /* (W27) MCASP1_AXR2.VOUT0_DATA9 */
+ J721S2_IOPAD(0x084, PIN_OUTPUT, 2) /* (AA28) MCASP0_AXR5.VOUT0_DE */
+ J721S2_IOPAD(0x080, PIN_OUTPUT, 2) /* (U26) MCASP0_AXR4.VOUT0_HSYNC */
+ J721S2_IOPAD(0x078, PIN_OUTPUT, 2) /* (Y25) MCAN2_RX.VOUT0_PCLK */
+ J721S2_IOPAD(0x088, PIN_OUTPUT, 2) /* (AD27) MCASP0_AXR6.VOUT0_VP0_VSYNC */
+ >;
+ };
+
+ hdmi_hpd_pins_default: hdmi-hpd-default-pins {
+ pinctrl-single,pins = <
+ J721S2_IOPAD(0x000, PIN_INPUT, 7) /* (AG24) EXTINTN.GPIO0_0 */
+ >;
+ };
};
&wkup_pmx2 {
@@ -373,6 +458,23 @@ &mcu_i2c0 {
clock-frequency = <400000>;
};
+&mcu_i2c1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&mcu_i2c1_pins_default>;
+ /* i2c1 is used for DVI DDC, so we need to use 100kHz */
+ clock-frequency = <100000>;
+
+ exp2: gpio@20 {
+ compatible = "ti,tca6408";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-line-names = "HDMI_PDn","HDMI_LS_OE",
+ "DP0_3V3_EN","eDP_ENABLE";
+ };
+};
+
&main_sdhci0 {
/* Unused */
status = "disabled";
@@ -433,3 +535,39 @@ &main_mcan7 {
pinctrl-0 = <&main_mcan7_pins_default>;
phys = <&transceiver4>;
};
+
+&dss {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&dss_vout0_pins_default>;
+ /*
+ * These clock assignments are chosen to enable the following outputs:
+ *
+ * VP0 - DisplayPort SST
+ * VP1 - DPI0
+ * VP2 - DSI
+ * VP3 - DPI1
+ */
+ assigned-clocks = <&k3_clks 158 2>,
+ <&k3_clks 158 5>,
+ <&k3_clks 158 14>,
+ <&k3_clks 158 18>;
+ assigned-clock-parents = <&k3_clks 158 3>,
+ <&k3_clks 158 7>,
+ <&k3_clks 158 16>,
+ <&k3_clks 158 22>;
+};
+
+&dss_ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* HDMI */
+ port@1 {
+ reg = <1>;
+
+ dpi_out0: endpoint {
+ remote-endpoint = <&tfp410_in>;
+ };
+ };
+};
--
2.25.1