linux-kernel - [PATCH v2 4/4] ARM: at91/dt: sama5d2 Xplained: pmic needs a specific sda hold time

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Message-ID: <1449136434-27619-6-git-send-email-ludovic.desroches@atmel.com>
Date:	Thu, 3 Dec 2015 10:53:54 +0100
From:	Ludovic Desroches <ludovic.desroches@...el.com>
To:	<wsa@...-dreams.de>, <nicolas.ferre@...el.com>,
	<alexandre.belloni@...e-electrons.com>
CC:	<linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<plagnioj@...osoft.com>, <linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>,
	Ludovic Desroches <ludovic.desroches@...el.com>
Subject: [PATCH v2 4/4] ARM: at91/dt: sama5d2 Xplained: pmic needs a specific sda hold time

Data have to be held longer for the PMIC device. The ACT8945A
datasheet claims that minimum SDA data hold time is about 300 ns.

Signed-off-by: Ludovic Desroches <ludovic.desroches@...el.com>
---
 arch/arm/boot/dts/at91-sama5d2_xplained.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
index ad6de73..9bced00 100644
--- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
@@ -129,6 +129,7 @@
 				dmas = <0>, <0>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_i2c0_default>;
+				i2c-sda-hold-time-ns = <350>;
 				status = "okay";
 
 				pmic: act8865@5b {
-- 
2.5.0

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