linux-kernel - [PATCH] ARM: dts: at91: sama5d2_ptc

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Date:   Fri, 7 Sep 2018 10:18:51 +0200
From:   Ludovic Desroches <ludovic.desroches@...rochip.com>
To:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>
CC:     <nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <robh+dt@...nel.org>, <mark.rutland@....com>,
        <linux-kernel@...r.kernel.org>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>
Subject: [PATCH] ARM: dts: at91: sama5d2_ptc_ek: fix nand pinctrl

The drive strength has to be set to medium otherwise some data
corruption may happen.

Signed-off-by: Ludovic Desroches <ludovic.desroches@...rochip.com>
---

Hi,

This fix depends on the support of the drive-strength for the atmel pio4
pinctroller. It has been added in v4.19 but I omitted to send it at the
same time.

Ludovic

 arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts b/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
index b10dccd0958f..3b1baa8605a7 100644
--- a/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
@@ -11,6 +11,7 @@
 #include "sama5d2-pinfunc.h"
 #include <dt-bindings/mfd/atmel-flexcom.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/at91.h>
 
 / {
 	model = "Atmel SAMA5D2 PTC EK";
@@ -299,6 +300,7 @@
 							 <PIN_PA30__NWE_NANDWE>,
 							 <PIN_PB2__NRD_NANDOE>;
 						bias-pull-up;
+						atmel,drive-strength = <ATMEL_PIO_DRVSTR_ME>;
 					};
 
 					ale_cle_rdy_cs {
-- 
2.12.2