linux-kernel - [PATCH V2] arm64: dts: ti: k3-pinctrl: Introduce debounce select mux macros

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Message-ID: <20230619131620.3286650-1-nm@ti.com>
Date:   Mon, 19 Jun 2023 08:16:20 -0500
From:   Nishanth Menon <nm@...com>
To:     Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Tero Kristo <kristo@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Nishanth Menon <nm@...com>
Subject: [PATCH V2] arm64: dts: ti: k3-pinctrl: Introduce debounce select mux macros

Introduce the debounce select mux macros to allow folks to setup
debounce configuration for pins. Each configuration selected maps
to a specific timing register as documented in appropriate Technical
Reference Manual (example:[1]).

[1] AM625x TRM (section 6.1.2.2): https://www.ti.com/lit/pdf/spruiv7

Signed-off-by: Nishanth Menon <nm@...com>
---
Changes since V1:
- I have'nt picked up Krystoff's ack since the file modified is now different.
- Changes now applied to k3-pinctrl.h instead of the ABI header that is
  now set up to be deleted in v6.5-rc1.

V1: https://lore.kernel.org/linux-devicetree/20230308084309.396192-1-nm@ti.com/

 arch/arm64/boot/dts/ti/k3-pinctrl.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-pinctrl.h b/arch/arm64/boot/dts/ti/k3-pinctrl.h
index c97548a3f42d..6004e0967ec5 100644
--- a/arch/arm64/boot/dts/ti/k3-pinctrl.h
+++ b/arch/arm64/boot/dts/ti/k3-pinctrl.h
@@ -11,6 +11,7 @@
 #define PULLUDEN_SHIFT		(16)
 #define PULLTYPESEL_SHIFT	(17)
 #define RXACTIVE_SHIFT		(18)
+#define DEBOUNCE_SHIFT		(11)
 
 #define PULL_DISABLE		(1 << PULLUDEN_SHIFT)
 #define PULL_ENABLE		(0 << PULLUDEN_SHIFT)
@@ -29,6 +30,14 @@
 #define PIN_INPUT_PULLUP	(INPUT_EN | PULL_UP)
 #define PIN_INPUT_PULLDOWN	(INPUT_EN | PULL_DOWN)
 
+#define PIN_DEBOUNCE_DISABLE	(0 << DEBOUNCE_SHIFT)
+#define PIN_DEBOUNCE_CONF1	(1 << DEBOUNCE_SHIFT)
+#define PIN_DEBOUNCE_CONF2	(2 << DEBOUNCE_SHIFT)
+#define PIN_DEBOUNCE_CONF3	(3 << DEBOUNCE_SHIFT)
+#define PIN_DEBOUNCE_CONF4	(4 << DEBOUNCE_SHIFT)
+#define PIN_DEBOUNCE_CONF5	(5 << DEBOUNCE_SHIFT)
+#define PIN_DEBOUNCE_CONF6	(6 << DEBOUNCE_SHIFT)
+
 #define AM62AX_IOPAD(pa, val, muxmode)		(((pa) & 0x1fff)) ((val) | (muxmode))
 #define AM62AX_MCU_IOPAD(pa, val, muxmode)	(((pa) & 0x1fff)) ((val) | (muxmode))
 
-- 
2.40.0