linux-kernel - [PATCH v6 47/48] ARM: dts: am43xx: Describe the magnetic reader/ADC1 hardware module

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Date:   Fri, 15 Oct 2021 10:15:05 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Jonathan Cameron <jic23@...nel.org>,
        Lee Jones <lee.jones@...aro.org>, linux-iio@...r.kernel.org,
        linux-omap@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Ryan Barnett <ryan.barnett@...lins.com>,
        linux-kernel@...r.kernel.org
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Tony Lindgren <tony@...mide.com>
Subject: [PATCH v6 47/48] ARM: dts: am43xx: Describe the magnetic reader/ADC1 hardware module

This hardware module is close to the am33xx ADC module but instead of
featuring a touchscreen it has a magnetic reader capability.

Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
Acked-by: Tony Lindgren <tony@...mide.com>
---
 arch/arm/boot/dts/am437x-l4.dtsi     | 31 ++++++++++++++++++++++++++--
 arch/arm/boot/dts/am43xx-clocks.dtsi |  7 +++++++
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/am437x-l4.dtsi b/arch/arm/boot/dts/am437x-l4.dtsi
index ba58e6b0da1d..8f2268c02778 100644
--- a/arch/arm/boot/dts/am437x-l4.dtsi
+++ b/arch/arm/boot/dts/am437x-l4.dtsi
@@ -2378,11 +2378,38 @@ hdq: hdq@0 {
 		};
 
 		target-module@...00 {			/* 0x4834c000, ap 114 72.0 */
-			compatible = "ti,sysc";
-			status = "disabled";
+			compatible = "ti,sysc-omap4", "ti,sysc";
+			reg = <0x4c000 0x4>,
+			      <0x4c010 0x4>;
+			reg-names = "rev", "sysc";
+			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+					<SYSC_IDLE_NO>,
+					<SYSC_IDLE_SMART>;
+			clocks = <&l3s_clkctrl AM4_L3S_ADC1_CLKCTRL 0>;
+			clock-names = "fck";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x0 0x4c000 0x2000>;
+
+			magadc: magadc@0 {
+				compatible = "ti,am4372-magadc";
+				reg = <0x0 0x2000>;
+				interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&adc_mag_fck>;
+				clock-names = "fck";
+				dmas = <&edma 54 0>, <&edma 55 0>;
+				dma-names = "fifo0", "fifo1";
+				status = "disabled";
+
+				mag {
+					compatible = "ti,am4372-mag";
+				};
+
+				adc {
+					#io-channel-cells = <1>;
+					compatible ="ti,am4372-adc";
+				};
+			};
 		};
 
 		target-module@...00 {			/* 0x48380000, ap 123 42.0 */
diff --git a/arch/arm/boot/dts/am43xx-clocks.dtsi b/arch/arm/boot/dts/am43xx-clocks.dtsi
index 314fc5975acb..66e892fa3398 100644
--- a/arch/arm/boot/dts/am43xx-clocks.dtsi
+++ b/arch/arm/boot/dts/am43xx-clocks.dtsi
@@ -444,6 +444,13 @@ wdt1_fck: wdt1_fck@...c {
 		reg = <0x422c>;
 	};
 
+	adc_mag_fck: adc_mag_fck@...c {
+		#clock-cells = <0>;
+		compatible = "ti,mux-clock";
+		clocks = <&sys_clkin_ck>, <&dpll_per_m2_ck>;
+		reg = <0x424c>;
+	};
+
 	l3_gclk: l3_gclk {
 		#clock-cells = <0>;
 		compatible = "fixed-factor-clock";
-- 
2.27.0