mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-11-08 22:45:43 +00:00
147 lines
5.1 KiB
Diff
147 lines
5.1 KiB
Diff
From 05b2373ebb352f497015281f3251481fba1d0a41 Mon Sep 17 00:00:00 2001
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From: Ashokkumar G <0xfee1dead.sa@gmail.com>
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Date: Mon, 26 Jan 2015 12:08:26 -0700
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Subject: [PATCH 8/9] arch:arm:mmp:gplugd: Fix gPlugD reboot issue
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Board hangs in u-boot after issuing reboot related
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commands from Linux console due to not resetting
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Timer registers in the platform reset function which uses
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generic softreset. Fixing the issue by adding board reset
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code for gPlugD.
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Signed-off-by: Ashokkumar G <0xfee1dead.sa@gmail.com>
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---
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arch/arm/mach-mmp/gplugd.c | 35 ++++++++++++++++-
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arch/arm/mach-mmp/include/mach/regs-mpmu.h | 62 ++++++++++++++++++++++++++++++
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2 files changed, 96 insertions(+), 1 deletion(-)
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create mode 100644 arch/arm/mach-mmp/include/mach/regs-mpmu.h
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diff --git a/arch/arm/mach-mmp/gplugd.c b/arch/arm/mach-mmp/gplugd.c
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index b9c3c9257eec..ec4257ee1d60 100644
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--- a/arch/arm/mach-mmp/gplugd.c
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+++ b/arch/arm/mach-mmp/gplugd.c
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@@ -22,6 +22,8 @@
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#include <mach/irqs.h>
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#include <mach/pxa168.h>
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#include <mach/mfp-pxa168.h>
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+#include <mach/regs-mpmu.h>
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+#include <mach/regs-timers.h>
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#include <uapi/linux/ethtool.h>
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#include <linux/etherdevice.h>
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@@ -365,6 +367,37 @@ static struct pxa168_eth_platform_data gplugd_eth_platform_data = {
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.device_mac = device_mac_address,
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};
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+static void gplugd_restart(char mode, const char *cmd)
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+{
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+#define MPMU_APRR_WDTR (1<<4)
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+ volatile u32 watchdog_virt_base;
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+
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+ watchdog_virt_base = (u32)TIMERS1_VIRT_BASE;
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+ /* negate hardware reset to the WDT after system reset */
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+ writel((readl(MPMU_APRR) | MPMU_APRR_WDTR), MPMU_APRR);
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+
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+ /*disable functional WDT clock */
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+ writel(0x1, MPMU_WDTPCR);
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+
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+ /* clear previous WDT status */
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+ writel(0xbaba, (volatile void*)(watchdog_virt_base + TMR_WFAR));
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+ writel(0xeb10, (volatile void*)(watchdog_virt_base + TMR_WSAR));
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+ writel(0, (volatile void*)(watchdog_virt_base + TMR_WSR));
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+
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+ /* set match counter */
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+ writel(0xbaba, (volatile void*)(watchdog_virt_base + TMR_WFAR));
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+ writel(0xeb10, (volatile void*)(watchdog_virt_base + TMR_WSAR));
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+ writel(0xf, (volatile void*)(watchdog_virt_base + TMR_WMR));
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+
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+ /* enable WDT reset */
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+ writel(0xbaba, (volatile void*)(watchdog_virt_base + TMR_WFAR));
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+ writel(0xeb10, (volatile void*)(watchdog_virt_base + TMR_WSAR));
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+ writel(0x3, (volatile void*)(watchdog_virt_base + TMR_WMER));
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+
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+ /*enable functional WDT clock */
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+ writel(0x3, MPMU_WDTPCR);
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+}
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+
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static void __init gplugd_init(void)
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{
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mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
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@@ -413,5 +446,5 @@ MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
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.init_irq = pxa168_init_irq,
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.init_time = pxa168_timer_init,
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.init_machine = gplugd_init,
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- .restart = pxa168_restart,
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+ .restart = gplugd_restart,
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MACHINE_END
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diff --git a/arch/arm/mach-mmp/include/mach/regs-mpmu.h b/arch/arm/mach-mmp/include/mach/regs-mpmu.h
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new file mode 100644
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index 000000000000..91ecb7899ff0
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--- /dev/null
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+++ b/arch/arm/mach-mmp/include/mach/regs-mpmu.h
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@@ -0,0 +1,62 @@
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+/**************************************************************************
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+ *
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+ * Copyright (c) 2009, 2010 Marvell International Ltd.
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+ *
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+ * This file is part of GNU program.
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+ *
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+ * GNU program is free software: you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation, either version 2 of the License, or (at your
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+ * option) any later version.
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+ *
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+ * GNU program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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+ * Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License along
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+ * with this program.
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+ *
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+ * If not, see http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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+ *
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+ *************************************************************************/
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+
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+/*
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+ * linux/arch/arm/mach-mmp/include/mach/regs-mpmu.h
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+ *
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+ * Main Power Management Unit
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+ */
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+
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+#ifndef __ASM_MACH_REGS_MPMU_H
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+#define __ASM_MACH_REGS_MPMU_H
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+
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+#include <mach/addr-map.h>
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+
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+#define MPMU_CPCR MPMU_REG(0x0000)
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+#define MPMU_FCCR MPMU_REG(0x0008)
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+#define MPMU_POCR MPMU_REG(0x000c)
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+#define MPMU_POSR MPMU_REG(0x0010)
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+#define MPMU_SUCCR MPMU_REG(0x0014)
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+#define MPMU_VRCR MPMU_REG(0x0018)
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+#define MPMU_OHCR MPMU_REG(0x001c)
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+#define MPMU_GPCR MPMU_REG(0x0030)
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+#define MPMU_PLL2CR MPMU_REG(0x0034)
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+#define MPMU_SCCR MPMU_REG(0x0038)
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+#define MPMU_CWUCRM MPMU_REG(0x004c)
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+#define MPMU_PLL1_REG1 MPMU_REG(0x0050)
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+#define MPMU_PLL1_REG2 MPMU_REG(0x0054)
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+#define MPMU_PLL1_SSC MPMU_REG(0x0058)
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+#define MPMU_PLL2_REG1 MPMU_REG(0x0060)
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+#define MPMU_PLL2_REG2 MPMU_REG(0x0064)
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+#define MPMU_PLL2_SSC MPMU_REG(0x0068)
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+#define MPMU_TS MPMU_REG(0x0080)
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+#define MPMU_WDTPCR MPMU_REG(0x0200)
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+#define MPMU_APCR MPMU_REG(0x1000)
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+#define MPMU_APSR MPMU_REG(0x1004)
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+#define MPMU_APRR MPMU_REG(0x1020)
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+#define MPMU_ACGR MPMU_REG(0x1024)
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+#define MPMU_ARSR MPMU_REG(0x1028)
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+#define MPMU_AWUCRS MPMU_REG(0x1048)
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+#define MPMU_AWUCRM MPMU_REG(0x104c)
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+
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+#endif /* __ASM_MACH_REGS_APMU_H */
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--
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2.14.1
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