From: Stefan Agner <stefan@agner.ch>
To: shawnguo@kernel.org, mturquette@baylibre.com, sboyd@codeaurora.org
Cc: kernel@pengutronix.de, sergeimir@emcraft.com, tglx@linutronix.de,
jason@lakedaemon.net, marc.zyngier@arm.com, robh+dt@kernel.org,
pawel.moll@arm.com, mark.rutland@arm.com,
ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
Stefan Agner <stefan@agner.ch>
Subject: [PATCH 18/18] ARM: vf610: PM: enable SNVS access
Date: Wed, 9 Mar 2016 18:16:59 -0800 [thread overview]
Message-ID: <1457576219-7971-19-git-send-email-stefan@agner.ch> (raw)
In-Reply-To: <1457576219-7971-1-git-send-email-stefan@agner.ch>
Restore access to SNVS which seems to be done by the boot ROM
on normal boot. This is required for RTC wakeup not ending up
in a interrupt storm, since the SNVS RTC driver can not
acknowledge the wakeup alarm without write access.
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
arch/arm/mach-imx/suspend-vf610.S | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm/mach-imx/suspend-vf610.S b/arch/arm/mach-imx/suspend-vf610.S
index 09ad246..6df0622 100644
--- a/arch/arm/mach-imx/suspend-vf610.S
+++ b/arch/arm/mach-imx/suspend-vf610.S
@@ -429,6 +429,17 @@ ddrmc_initializing:
ldr r5, =0x0
str r5, [r11, #VF610_GPC_LPMR]
+ /* Enable SNVS */
+ ldr r3, [r0, #PM_INFO_VF610_CCM_P_OFFSET]
+ ldr r4, [r3, #VF610_CCM_CCGR6]
+ orr r4, r4, #0x0000C000
+ str r4, [r3, #VF610_CCM_CCGR6]
+
+ /* Enable SNVS access (RTC) */
+ ldr r11, =0x400a7000
+ ldr r4, =0x80000100
+ str r4, [r11, #0x4]
+
/* get physical resume address from pm_info. */
ldr lr, [r0, #PM_INFO_RESUME_ADDR_OFFSET]
--
2.7.2
prev parent reply other threads:[~2016-03-10 2:16 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 2:16 [PATCH 00/18] ARM: vf610: Suspend/resume with self-refresh mode Stefan Agner
2016-03-10 2:16 ` [PATCH 02/18] ARM: dts: vf610: add GPC as new interrupt parent Stefan Agner
2016-03-31 8:21 ` Shawn Guo
2016-03-31 17:53 ` Stefan Agner
2016-03-10 2:16 ` [PATCH 03/18] ARM: dts: vf610-colibri: GPIO wakeup key Stefan Agner
2016-03-31 8:19 ` Shawn Guo
2016-03-31 17:55 ` Stefan Agner
2016-03-10 2:16 ` [PATCH 04/18] ARM: dts: vf610: add on-chip SRAM Stefan Agner
2016-03-31 8:33 ` Shawn Guo
2016-03-31 17:57 ` Stefan Agner
2016-03-10 2:16 ` [PATCH 05/18] ARM: dts: vf610: add modules required for PM Stefan Agner
[not found] ` <1457576219-7971-6-git-send-email-stefan-XLVq0VzYD2Y@public.gmane.org>
2016-03-31 8:34 ` Shawn Guo
2016-03-10 2:16 ` [PATCH 06/18] ARM: imx: clk-gate2: allow custom gate configuration Stefan Agner
2016-03-31 11:37 ` Shawn Guo
2016-03-31 17:59 ` Stefan Agner
2016-03-10 2:16 ` [PATCH 07/18] ARM: imx: clk-vf610: leave DDR clock on Stefan Agner
[not found] ` <1457576219-7971-1-git-send-email-stefan-XLVq0VzYD2Y@public.gmane.org>
2016-03-10 2:16 ` [PATCH 01/18] irqchip: vf610-gpc: add Vybrid GPC IRQ controller Stefan Agner
[not found] ` <1457576219-7971-2-git-send-email-stefan-XLVq0VzYD2Y@public.gmane.org>
2016-03-11 3:41 ` Marc Zyngier
2016-03-11 18:11 ` Stefan Agner
2016-03-12 0:21 ` Marc Zyngier
2016-03-31 8:07 ` Shawn Guo
2016-03-10 2:16 ` [PATCH 08/18] ARM: clk: add WKPU unit Stefan Agner
2016-03-16 1:13 ` Stephen Boyd
2016-03-10 2:16 ` [PATCH 10/18] tty: serial: fsl_lpuart: support suspend/resume Stefan Agner
2016-03-31 11:41 ` Shawn Guo
2016-03-10 2:16 ` [PATCH 13/18] ARM: dts: vf610: add WKPU connection to GPIO Stefan Agner
2016-03-10 2:16 ` [PATCH 17/18] Documentation: dt: add Vybrid DDR memory controller bindings Stefan Agner
2016-03-18 16:10 ` Rob Herring
2016-03-10 2:16 ` [PATCH 09/18] ARM: vf610: clk: add suspend/resume support Stefan Agner
2016-03-31 11:39 ` Shawn Guo
2016-03-10 2:16 ` [PATCH 11/18] pinctrl: pinctrl-imx: implement suspend/resume Stefan Agner
2016-03-10 2:16 ` [PATCH 12/18] gpio: vf610: add system PM suspend/resume Stefan Agner
2016-03-10 2:16 ` [PATCH 14/18] gpio: vf610: add support for WKPU unit Stefan Agner
2016-03-17 20:00 ` Rob Herring
2016-03-17 22:12 ` Stefan Agner
2016-03-10 2:16 ` [PATCH 15/18] ARM: vf610: PM: initial suspend/resume support Stefan Agner
2016-03-10 21:19 ` kbuild test robot
2016-04-01 2:25 ` Shawn Guo
2016-04-01 6:40 ` Stefan Agner
2016-03-10 2:16 ` [PATCH 16/18] ARM: vf610: PM: enable Suspend-to-RAM only if hardware fixes are in place Stefan Agner
2016-03-10 2:16 ` Stefan Agner [this message]
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