linux-kernel - [PATCH] counter: ti-eqep: Enable for TDA4VM/J721E

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Message-Id: <20211130193346.678544-1-jkridner@beagleboard.org>
Date:   Tue, 30 Nov 2021 14:33:46 -0500
From:   Jason Kridner <jkridner@...gleboard.org>
To:     William Breathitt Gray <vilhelm.gray@...il.com>
Cc:     Jason Kridner <jkridner@...gleboard.org>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] counter: ti-eqep: Enable for TDA4VM/J721E

Counter TI-EQEP was tested on TDA4VM/J721E SoC.

Overlay used for testing EQEP0 and EQEP1:

    &cbass_main {
	#address-cells = <2>;
	#size-cells = <2>;

	eqep0: qep@...0000 {
		compatible = "ti,am3352-eqep";
		reg = <0 0x3200000 0 0x100>;
		power-domains = <&k3_pds 94 TI_SCI_PD_EXCLUSIVE>;
		clocks = <&k3_clks 94 0>;
		clock-names = "eqep0-ficlk";
		interrupts = <GIC_SPI 322 IRQ_TYPE_EDGE_RISING>;
		interrupt-names = "eqep0";
		symlink = "bone/eQEP0"; /* A - P9_42, B - P9_27 */

		count_mode = <0>;
		swap_input = <0>;
		invert_qa = <1>;
		invert_qb = <1>;
		invert_qi = <0>;
		invert_qs = <0>;
	};

	eqep1: qep@...0000 {
		compatible = "ti,am3352-eqep";
		reg = <0 0x3210000 0 0x100>;
		power-domains = <&k3_pds 95 TI_SCI_PD_EXCLUSIVE>;
		clocks = <&k3_clks 95 0>;
		clock-names = "eqep1-ficlk";
		interrupts = <GIC_SPI 323 IRQ_TYPE_EDGE_RISING>;
		interrupt-names = "eqep1";
		symlink = "bone/eQEP1"; /* A - P8_35, B - P8_33 */

		count_mode = <0>;
		swap_input = <0>;
		invert_qa = <1>;
		invert_qb = <1>;
		invert_qi = <0>;
		invert_qs = <0>;
	};

	eqep2: qep@...0000 {
		status = "disabled";
		compatible = "ti,am3352-eqep";
		reg = <0 0x3220000 0 0x100>;
		power-domains = <&k3_pds 96 TI_SCI_PD_EXCLUSIVE>;
		clocks = <&k3_clks 96 0>;
		clock-names = "eqep2-ficlk";
		interrupts = <GIC_SPI 324 IRQ_TYPE_EDGE_RISING>;
		interrupt-names = "eqep2";

		count_mode = <0>;
		swap_input = <0>;
		invert_qa = <1>;
		invert_qb = <1>;
		invert_qi = <0>;
		invert_qs = <0>;
	};
    };

Signed-off-by: Jason Kridner <jkridner@...gleboard.org>
---
 drivers/counter/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/counter/Kconfig b/drivers/counter/Kconfig
index 2de53ab0dd25..453490059c88 100644
--- a/drivers/counter/Kconfig
+++ b/drivers/counter/Kconfig
@@ -51,7 +51,7 @@ config STM32_LPTIMER_CNT
 
 config TI_EQEP
 	tristate "TI eQEP counter driver"
-	depends on (SOC_AM33XX || COMPILE_TEST)
+	depends on (SOC_AM33XX || ARCH_K3 || COMPILE_TEST)
 	select REGMAP_MMIO
 	help
 	  Select this option to enable the Texas Instruments Enhanced Quadrature
-- 
2.30.2