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From:   Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
To:     <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
        <devicetree@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>
CC:     <lars@metafoo.de>, <broonie@kernel.org>, <perex@perex.cz>,
        <tiwai@suse.com>, <robh+dt@kernel.org>,
        <nicolas.ferre@microchip.com>,
        "Codrin Ciubotariu" <codrin.ciubotariu@microchip.com>
Subject: [PATCH v3 5/6] ARM: dts: at91: sama7g5ek: add node for PDMC0
Date:   Mon, 7 Mar 2022 14:22:01 +0200
Message-ID: <20220307122202.2251639-6-codrin.ciubotariu@microchip.com>
In-Reply-To: <20220307122202.2251639-1-codrin.ciubotariu@microchip.com>
References: <20220307122202.2251639-1-codrin.ciubotariu@microchip.com>
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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>
---

Changes in v3:
 - none

Changes in v2:
 - replaced included file dt-bindings/sound/mchp,pdmc.h wih
   dt-bindings/sound/microchip,pdmc.h

 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 ccf9e224da78..a1fb980d3fc1 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";
@@ -439,7 +440,7 @@ &gmac1 {
 		     &pinctrl_gmac1_mdio_default
 		     &pinctrl_gmac1_phy_irq>;
 	phy-mode = "rmii";
-	status = "okay";
+	status = "okay"; /* Conflict with pdmc0. */
 
 	ethernet-phy@0 {
 		reg = <0x0>;
@@ -453,6 +454,17 @@ &i2s0 {
 	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_flx0_default: flx0_default {
 		pinmux = <PIN_PE3__FLEXCOM0_IO0>,
@@ -609,6 +621,13 @@ pinctrl_mikrobus1_spi: mikrobus1_spi {
 		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>,
-- 
2.32.0