linux-kernel - [PATCH v2 1/2] arm64: dts: ti: k3-pinctrl: Introduce deep sleep macros

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Message-ID: <20241205120134.754664-2-s-vadapalli@ti.com>
Date: Thu, 5 Dec 2024 17:31:28 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: [PATCH v2 1/2] arm64: dts: ti: k3-pinctrl: Introduce deep sleep macros

The behavior of pins in deep sleep mode can be configured by programming
the corresponding bits in the respective Pad Configuration register. Add
macros to support this.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---

v1:
https://lore.kernel.org/r/20241112115650.988943-2-s-vadapalli@ti.com
Changes since v1:
- Rebased on next-20241204.

While Rob had suggested dropping the zero defines at:
https://lore.kernel.org/r/20241115154822.GA2954187-robh@kernel.org/
I had pointed out the inconsistency with existing convention at:
https://lore.kernel.org/r/5b35c736-74d6-4fe9-ae82-272dc2e98b82@ti.com/
asking for Rob's opinion. Since I didn't receive a reply, I assumed that
the patch is fine in terms of being consistent and hence haven't dropped
the zero defines in the current version.

Regards,
Siddharth.

 arch/arm64/boot/dts/ti/k3-pinctrl.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-pinctrl.h b/arch/arm64/boot/dts/ti/k3-pinctrl.h
index 22b8d73cfd32..cac7cccc1112 100644
--- a/arch/arm64/boot/dts/ti/k3-pinctrl.h
+++ b/arch/arm64/boot/dts/ti/k3-pinctrl.h
@@ -12,6 +12,12 @@
 #define PULLTYPESEL_SHIFT	(17)
 #define RXACTIVE_SHIFT		(18)
 #define DEBOUNCE_SHIFT		(11)
+#define FORCE_DS_EN_SHIFT	(15)
+#define DS_EN_SHIFT		(24)
+#define DS_OUT_DIS_SHIFT	(25)
+#define DS_OUT_VAL_SHIFT	(26)
+#define DS_PULLUD_EN_SHIFT	(27)
+#define DS_PULLTYPE_SEL_SHIFT	(28)
 
 #define PULL_DISABLE		(1 << PULLUDEN_SHIFT)
 #define PULL_ENABLE		(0 << PULLUDEN_SHIFT)
@@ -38,6 +44,19 @@
 #define PIN_DEBOUNCE_CONF5	(5 << DEBOUNCE_SHIFT)
 #define PIN_DEBOUNCE_CONF6	(6 << DEBOUNCE_SHIFT)
 
+#define PIN_DS_FORCE_DISABLE		(0 << FORCE_DS_EN_SHIFT)
+#define PIN_DS_FORCE_ENABLE		(1 << FORCE_DS_EN_SHIFT)
+#define PIN_DS_IO_OVERRIDE_DISABLE	(0 << DS_IO_OVERRIDE_EN_SHIFT)
+#define PIN_DS_IO_OVERRIDE_ENABLE	(1 << DS_IO_OVERRIDE_EN_SHIFT)
+#define PIN_DS_OUT_ENABLE		(0 << DS_OUT_DIS_SHIFT)
+#define PIN_DS_OUT_DISABLE		(1 << DS_OUT_DIS_SHIFT)
+#define PIN_DS_OUT_VALUE_ZERO		(0 << DS_OUT_VAL_SHIFT)
+#define PIN_DS_OUT_VALUE_ONE		(1 << DS_OUT_VAL_SHIFT)
+#define PIN_DS_PULLUD_ENABLE		(0 << DS_PULLUD_EN_SHIFT)
+#define PIN_DS_PULLUD_DISABLE		(1 << DS_PULLUD_EN_SHIFT)
+#define PIN_DS_PULL_DOWN		(0 << DS_PULLTYPE_SEL_SHIFT)
+#define PIN_DS_PULL_UP			(1 << DS_PULLTYPE_SEL_SHIFT)
+
 /* Default mux configuration for gpio-ranges to use with pinctrl */
 #define PIN_GPIO_RANGE_IOPAD	(PIN_INPUT | 7)
 
-- 
2.43.0