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From: Jan Weitzel <j.weitzel@phytec.de>
To: barebox@lists.infradead.org
Subject: [PATCH] OMAP4 do not set TPS62361_REG_ADDR_SET0
Date: Wed, 12 Jun 2013 09:17:44 +0200	[thread overview]
Message-ID: <1371021464-2390-1-git-send-email-j.weitzel@phytec.de> (raw)

Don't set SET0 voltage, because it acts as boot voltage for OPP boot.
Take care that the kernel doesn't drive vset gpio to low. This may
happen while reseting the gpio module at initialization, look for
HWMOD_INIT_NO_RESET.

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
---
 arch/arm/mach-omap/omap4_generic.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-omap/omap4_generic.c b/arch/arm/mach-omap/omap4_generic.c
index 7200393..bf1f1a7 100644
--- a/arch/arm/mach-omap/omap4_generic.c
+++ b/arch/arm/mach-omap/omap4_generic.c
@@ -586,11 +586,10 @@ noinline int omap4460_scale_vcores(unsigned vsel0_pin, unsigned volt_mv)
 	writel(0x6026, OMAP44XX_PRM_VC_CFG_I2C_CLK);
 
 	/* TPS - supplies vdd_mpu on 4460
-	 * Setup SET1 and SET0 with right values so that kernel
-	 * can use either of them based on its needs.
+	 * Setup SET1 and don't touch SET0 it acts as boot voltage
+	 * source after reset.
 	 */
 
-	omap4_do_scale_tps62361(TPS62361_REG_ADDR_SET0, volt_mv);
 	omap4_do_scale_tps62361(TPS62361_REG_ADDR_SET1, volt_mv);
 
 	/*
-- 
1.7.0.4


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             reply	other threads:[~2013-06-12  7:18 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-12  7:17 Jan Weitzel [this message]
2013-06-12 18:28 ` Nishanth Menon
2013-06-21  8:24   ` [PATCH v2] " Jan Weitzel
2013-06-23 18:52     ` Sascha Hauer

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