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From: Ben Dooks <ben-linux@fluff.org>
To: linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org
Subject: [patch 2/6] SM501 MFD driver updates
Date: Wed, 13 Jun 2007 14:09:55 +0100	[thread overview]
Message-ID: <20070613131159.284417987@localhost> (raw)
In-Reply-To: 20070613130953.983863758@localhost

[-- Attachment #1: simtec-drivers-mfd-sm501-clock-order.patch --]
[-- Type: text/plain, Size: 1271 bytes --]

SM501: initialise SDRAM clock before bus clocks

This init sequence of setting the SDRAM clock before the
bus clock is recommend by Silicon Motion to stop problems
with writes not sticking into registers.

Signed-off-by: Vincent Sanders <vince@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

Index: linux-2.6.21-quilt8/drivers/mfd/sm501.c
===================================================================
--- linux-2.6.21-quilt8.orig/drivers/mfd/sm501.c	2007-06-07 12:12:38.000000000 +0100
+++ linux-2.6.21-quilt8/drivers/mfd/sm501.c	2007-06-07 12:13:03.000000000 +0100
@@ -833,15 +833,15 @@ static void sm501_init_regs(struct sm501
 	sm501_init_reg(sm, SM501_GPIO31_0_CONTROL, &init->gpio_low);
 	sm501_init_reg(sm, SM501_GPIO63_32_CONTROL, &init->gpio_high);
 
-	if (init->mclk) {
-		dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk);
-		sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk);
-	}
-
 	if (init->m1xclk) {
 		dev_info(sm->dev, "setting M1XCLK to %ld\n", init->m1xclk);
 		sm501_set_clock(sm->dev, SM501_CLOCK_M1XCLK, init->m1xclk);
 	}
+
+	if (init->mclk) {
+		dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk);
+		sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk);
+	}
 }
 
 static unsigned int sm501_mem_local[] = {

--

  parent reply	other threads:[~2007-06-13 13:39 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-13 13:09 [patch 0/6] SM501 MFD driver updates Ben Dooks
2007-06-13 13:09 ` [patch 1/6] " Ben Dooks
2007-06-13 13:09 ` Ben Dooks [this message]
2007-06-13 13:09 ` [patch 3/6] " Ben Dooks
2007-06-13 13:09 ` [patch 4/6] " Ben Dooks
2007-06-15  7:23   ` Mariusz Kozlowski
2007-06-13 13:09 ` [patch 5/6] " Ben Dooks
2007-06-13 13:09 ` [patch 6/6] " Ben Dooks

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