From: Liu Ying <Ying.Liu@freescale.com>
Date: Thu, 5 Jul 2012 10:58:13 +0000 (+0800)
Subject: ENGR00215884-2 MX6 SabreSD:Refine OV csi camera reset sequence
X-Git-Tag: v3.0.35-fsl~792
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=23bdc37f7a21111427d9a539082282eb7b6d6212;p=karo-tx-linux.git

ENGR00215884-2 MX6 SabreSD:Refine OV csi camera reset sequence

This patch refines OV csi camera reset sequence according to
OV's recommendation:
reset --------------------|_____|----------------
                        ->| 1ms |<-
pwdn  ----------|_________________________|------
              ->|   5ms   |<- ->|   5ms   |<-
    ->|   5ms   |<-

Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
(cherry picked from commit b4d3898a01c232b2525637fa1bb443f8b6208d0e)
---

diff --git a/arch/arm/mach-mx6/board-mx6q_sabresd.c b/arch/arm/mach-mx6/board-mx6q_sabresd.c
index 07d76cecfa82..cefb3b393d27 100644
--- a/arch/arm/mach-mx6/board-mx6q_sabresd.c
+++ b/arch/arm/mach-mx6/board-mx6q_sabresd.c
@@ -495,8 +495,14 @@ static void mx6q_csi0_io_init(void)
 	/* Camera power down */
 	gpio_request(SABRESD_CSI0_PWN, "cam-pwdn");
 	gpio_direction_output(SABRESD_CSI0_PWN, 1);
-	msleep(1);
+	msleep(5);
 	gpio_set_value(SABRESD_CSI0_PWN, 0);
+	msleep(5);
+	gpio_set_value(SABRESD_CSI0_RST, 0);
+	msleep(1);
+	gpio_set_value(SABRESD_CSI0_RST, 1);
+	msleep(5);
+	gpio_set_value(SABRESD_CSI0_PWN, 1);
 
 	/* For MX6Q:
 	 * GPR1 bit19 and bit20 meaning: