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From: Joseph Lo <josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
To: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	Joseph Lo <josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Subject: [PATCH V2 07/11] ARM: tegra114: flowctrl: add support for cpu_suspend_enter/exit
Date: Wed, 3 Jul 2013 17:50:43 +0800	[thread overview]
Message-ID: <1372845047-25147-8-git-send-email-josephl@nvidia.com> (raw)
In-Reply-To: <1372845047-25147-1-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

The flow controller can help CPU to go into suspend mode (powered-down
state). When CPU goes into powered-down state, it needs some careful
settings before getting into and after leaving. The enter and exit
functions do that by configuring appropriate mode for flow controller.

For Tegra114, the setting is compatible with Tegra30.

Signed-off-by: Joseph Lo <josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
V2:
* no change
---
 arch/arm/mach-tegra/flowctrl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-tegra/flowctrl.c b/arch/arm/mach-tegra/flowctrl.c
index b477ef3..5348543 100644
--- a/arch/arm/mach-tegra/flowctrl.c
+++ b/arch/arm/mach-tegra/flowctrl.c
@@ -86,6 +86,7 @@ void flowctrl_cpu_suspend_enter(unsigned int cpuid)
 		reg |= TEGRA20_FLOW_CTRL_CSR_WFE_CPU0 << cpuid;
 		break;
 	case TEGRA30:
+	case TEGRA114:
 		/* clear wfe bitmap */
 		reg &= ~TEGRA30_FLOW_CTRL_CSR_WFE_BITMAP;
 		/* clear wfi bitmap */
@@ -123,6 +124,7 @@ void flowctrl_cpu_suspend_exit(unsigned int cpuid)
 		reg &= ~TEGRA20_FLOW_CTRL_CSR_WFI_BITMAP;
 		break;
 	case TEGRA30:
+	case TEGRA114:
 		/* clear wfe bitmap */
 		reg &= ~TEGRA30_FLOW_CTRL_CSR_WFE_BITMAP;
 		/* clear wfi bitmap */
-- 
1.8.3.2

  parent reply	other threads:[~2013-07-03  9:50 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-03  9:50 [PATCH V2 00/11] ARM: tegra114: add support for system suspend Joseph Lo
     [not found] ` <1372845047-25147-1-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-07-03  9:50   ` [PATCH V2 01/11] ARM: tegra: do v7_invalidate_l1 only when CPU is Cortex-A9 Joseph Lo
2013-07-03  9:50   ` [PATCH V2 02/11] ARM: tegra: add a flag for tegra_disable_clean_inv_dcache to do LoUIS or ALL Joseph Lo
2013-07-03  9:50   ` [PATCH V2 03/11] ARM: tegra114: set up the correct L2 data RAM latency for Cortex-A15 Joseph Lo
2013-07-03  9:50   ` [PATCH V2 04/11] ARM: tegra114: add low level support code for cluster power down Joseph Lo
2013-07-03  9:50   ` [PATCH V2 05/11] ARM: tegra114: shut off the CPU rail when the last CPU in suspend Joseph Lo
2013-07-03  9:50   ` [PATCH V2 06/11] ARM: tegra114: hook tegra_tear_down_cpu function Joseph Lo
2013-07-03  9:50   ` Joseph Lo [this message]
2013-07-03  9:50   ` [PATCH V2 08/11] clk: tegra114: add suspend/resume function for tegra_cpu_car_ops Joseph Lo
2013-07-03  9:50   ` [PATCH V2 09/11] ARM: tegra: remove the limitation that Tegra114 can't support suspend Joseph Lo
2013-07-03  9:50   ` [PATCH V2 10/11] ARM: dts: tegra114: dalmore: add GPIO power key support Joseph Lo
     [not found]     ` <1372845047-25147-11-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-07-09 17:03       ` Stephen Warren
     [not found]         ` <51DC4274.8040607-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-07-10  1:06           ` Joseph Lo
2013-07-03  9:50   ` [PATCH V2 11/11] ARM: dts: tegra114: dalmore: add PM configurations for PMC Joseph Lo
2013-07-19 16:54   ` [PATCH V2 00/11] ARM: tegra114: add support for system suspend Stephen Warren

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