From 821cb05f6b4b024847624de0d0e5765c7b09b947 Mon Sep 17 00:00:00 2001
From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Date: Mon, 7 Mar 2022 14:22:01 +0200
Subject: [PATCH] ARM: dts: at91: sama7g5ek: add node for PDMC0

SAMA7G5-EK has 4 PDM microphones connected to PDMC0. PDMC0 pinmux is in
conflict with gmac1, gmac1 being enabled by default.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/all/20220307122202.2251639-6-codrin.ciubotariu@microchip.com
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
---
 arch/arm/boot/dts/at91-sama7g5ek.dts | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/at91-sama7g5ek.dts b/arch/arm/boot/dts/at91-sama7g5ek.dts
index 08685a10eda1..8033ad94eb6b 100644
--- a/arch/arm/boot/dts/at91-sama7g5ek.dts
+++ b/arch/arm/boot/dts/at91-sama7g5ek.dts
@@ -14,6 +14,7 @@
 #include <dt-bindings/mfd/atmel-flexcom.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/at91.h>
+#include <dt-bindings/sound/microchip,pdmc.h>
 
 / {
 	model = "Microchip SAMA7G5-EK";
@@ -456,7 +457,7 @@
 		     &pinctrl_gmac1_mdio_default
 		     &pinctrl_gmac1_phy_irq>;
 	phy-mode = "rmii";
-	status = "okay";
+	status = "okay"; /* Conflict with pdmc0. */
 
 	ethernet-phy@0 {
 		reg = <0x0>;
@@ -470,6 +471,17 @@
 	pinctrl-0 = <&pinctrl_i2s0_default>;
 };
 
+&pdmc0 {
+	#sound-dai-cells = <0>;
+	microchip,mic-pos = <MCHP_PDMC_DS0 MCHP_PDMC_CLK_NEGATIVE>, /* MIC 1 */
+			    <MCHP_PDMC_DS1 MCHP_PDMC_CLK_NEGATIVE>, /* MIC 2 */
+			    <MCHP_PDMC_DS0 MCHP_PDMC_CLK_POSITIVE>, /* MIC 3 */
+			    <MCHP_PDMC_DS1 MCHP_PDMC_CLK_POSITIVE>; /* MIC 4 */
+	status = "disabled"; /* Conflict with gmac1. */
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pdmc0_default>;
+};
+
 &pioA {
 
 	pinctrl_can0_default: can0_default {
@@ -639,6 +651,13 @@
 		bias-disable;
 	};
 
+	pinctrl_pdmc0_default: pdmc0_default {
+		pinmux = <PIN_PD23__PDMC0_DS0>,
+			 <PIN_PD24__PDMC0_DS1>,
+			 <PIN_PD22__PDMC0_CLK>;
+		bias_disable;
+	};
+
 	pinctrl_qspi: qspi {
 		pinmux = <PIN_PB12__QSPI0_IO0>,
 			 <PIN_PB11__QSPI0_IO1>,
-- 
2.20.1