linux-kernel - [PATCH V2 1/3] arm64: dts: ti: k3-pinctrl: Define a generic GPIO MUX Mode

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Message-ID: <20240627162539.691223-2-nm@ti.com>
Date: Thu, 27 Jun 2024 11:25:37 -0500
From: Nishanth Menon <nm@...com>
To: Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Rob Herring <robh@...nel.org>, Vignesh Raghavendra
	<vigneshr@...com>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Tero Kristo <kristo@...nel.org>, Vaishnav Achath <vaishnav.a@...com>,
        Jared McArthur <j-mcarthur@...com>, Bryan Brattlof <bb@...com>,
        Dhruva Gole <d-gole@...com>, Nishanth Menon
	<nm@...com>
Subject: [PATCH V2 1/3] arm64: dts: ti: k3-pinctrl: Define a generic GPIO MUX Mode

Introduce a GPIO mux mode macro for easier readability. All K3 devices
use mux mode 7 to switch to GPIO mux and this allows the gpio-ranges to
be defined for pinctrl-single clearly.

Signed-off-by: Nishanth Menon <nm@...com>
---
Changes since V1:
 - Mux definition PIN_GPIO_RANGE_IOPAD instead of PIN_GPIO_MUX_MODE
 - Added documentation as well to clarify the usage.

V1: https://lore.kernel.org/linux-arm-kernel/20240618173123.2592074-2-nm@ti.com/

 arch/arm64/boot/dts/ti/k3-pinctrl.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-pinctrl.h b/arch/arm64/boot/dts/ti/k3-pinctrl.h
index 4cd2df467d0b..22b8d73cfd32 100644
--- a/arch/arm64/boot/dts/ti/k3-pinctrl.h
+++ b/arch/arm64/boot/dts/ti/k3-pinctrl.h
@@ -38,6 +38,9 @@
 #define PIN_DEBOUNCE_CONF5	(5 << DEBOUNCE_SHIFT)
 #define PIN_DEBOUNCE_CONF6	(6 << DEBOUNCE_SHIFT)
 
+/* Default mux configuration for gpio-ranges to use with pinctrl */
+#define PIN_GPIO_RANGE_IOPAD	(PIN_INPUT | 7)
+
 #define AM62AX_IOPAD(pa, val, muxmode)		(((pa) & 0x1fff)) ((val) | (muxmode))
 #define AM62AX_MCU_IOPAD(pa, val, muxmode)	(((pa) & 0x1fff)) ((val) | (muxmode))
 
-- 
2.43.0