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linux-imx (3.0.35): Fix cpu_regulator problem with Wandboard

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With a recent merge, the default kernel for mx6dl changed to linux-imx
3.0.35, rev 3.0.0.  In this branch, calls to mx6_cpu_regulator_init() are
required.  This patch adds this call to the Wandboard init file.

Also, fixed some minor things such as adding the header to the Wandboard
board file so that the original authors are credited, and uncommented
the #include for cpu_op-mx6.h which was commented out for some reason.

Signed-off-by: John Weber <rjohnweber@gmail.com>
This commit is contained in:
John Weber 2013-03-25 14:19:18 +00:00 committed by Otavio Salvador
parent d7f5dc6aea
commit 58ae96298a
2 changed files with 88 additions and 1 deletions
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86
recipes-kernel/linux/linux-imx-3.0.35/wandboard-dual/0004-modifications-for-fsl-3.0.0-and-add-header.patch Normal file
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@ -0,0 +1,86 @@
From 725293d858a76d871b949f460b179a0fe4a8cc1c Mon Sep 17 00:00:00 2001
From: John Weber <rjohnweber@gmail.com>
Date: Mon, 25 Mar 2013 08:43:04 -0500
Subject: modifications for fsl 3.0.0 and add header
Freescale kernel 3.0.35, rev 3.0.0 requires that mx6_cpu_regulator_init()
be called within the board init function. Not doing so results in
unrecoverable kernel errors during kernel initialization in calls to
regulator_set_voltage(). Calls to this function seem to be removed
in rev 1.1.0 and later versions of the FSL kernel.
In addition, add the header to the file giving the original authors credit.
Include 'cpu_op-mx6.h' because this was commented out for some reason.
Upstream-Status: Pending
Signed-off-by: John Weber <rjohnweber@gmail.com>
---
arch/arm/mach-mx6/board-wand.c | 32 +++++++++++++++++++++++++++++++-
1 file changed, 31 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-mx6/board-wand.c b/arch/arm/mach-mx6/board-wand.c
index 7d2d45b..8b3029e 100644
--- a/arch/arm/mach-mx6/board-wand.c
+++ b/arch/arm/mach-mx6/board-wand.c
@@ -1,3 +1,21 @@
+/*
+ Wandboard board file. Copyright (C) 2013 Tapani Utriainen
+ Authors: Tapani Utriainen, Edward Lin
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -22,7 +40,10 @@
#include "crm_regs.h"
#include "devices-imx6q.h"
#include "usb.h"
-//#include "cpu_op-mx6.h"
+#include "cpu_op-mx6.h"
+
+extern char *soc_reg_id;
+extern char *pu_reg_id;
#define WAND_BT_ON IMX_GPIO_NR(3, 13)
#define WAND_BT_WAKE IMX_GPIO_NR(3, 14)
@@ -752,6 +773,8 @@ static const struct pm_platform_data wand_pm_data = {
static const struct mxc_dvfs_platform_data wand_dvfscore_data = {
.reg_id = "cpu_vddgp",
+ .soc_id = "cpu_vddsoc",
+ .pu_id = "cpu_vddvpu",
.clk1_id = "cpu_clk",
.clk2_id = "gpc_dvfs_clk",
.gpc_cntr_offset = MXC_GPC_CNTR_OFFSET,
@@ -780,6 +803,13 @@ static __init void wand_init_pm(void) {
imx6q_add_anatop_thermal_imx(1, &wand_thermal);
imx6q_add_pm_imx(0, &wand_pm_data);
imx6q_add_dvfs_core(&wand_dvfscore_data);
+
+ /* Required for 3.0.0 kernel */
+ gp_reg_id = wand_dvfscore_data.reg_id;
+ soc_reg_id = wand_dvfscore_data.soc_id;
+ pu_reg_id = wand_dvfscore_data.pu_id;
+ mx6_cpu_regulator_init();
+
imx6q_add_busfreq();
}
--
1.7.9.5

3
recipes-kernel/linux/linux-imx_3.0.35.bbappend
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@ -1,6 +1,6 @@
FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}-${PV}:"
PRINC := "${@int(PRINC) + 3}"
PRINC := "${@int(PRINC) + 4}"
# Wandboard-specific patches
SRC_URI_append_wandboard-dual = " \
@ -8,6 +8,7 @@ SRC_URI_append_wandboard-dual = " \
file://wandboard-dual/0002-wandboard-dual-fix-sdhc-platform-data.patch \
file://wandboard-dual/0003-linux-imx-3.0.35-Add-brcm80211-driver-backported-fro.patch \
file://wandboard-dual/0003-linux-imx-3.0.35-remove-brcm80211-staging-driver.patch \
file://wandboard-dual/0004-modifications-for-fsl-3.0.0-and-add-header.patch \
"
# Add support for the Congatec qmx6 board
SRC_URI_append_cgtqmx6 = " file://cgtqmx6/cgtqmx6.patch"