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* [PATCH] ARM: dra7xx: hwmod: drop .modulemode from pcie1/2 hwmods
@ 2015-02-03 15:51 grygorii.strashko at linaro.org
  2015-02-09  8:50 ` Kishon Vijay Abraham I
  0 siblings, 1 reply; 12+ messages in thread
From: grygorii.strashko at linaro.org @ 2015-02-03 15:51 UTC (permalink / raw)
  To: linux-arm-kernel

From: Grygorii Strashko <grygorii.strashko@linaro.org>

Now DRA7xx pcie1/2 hwmods define PRCM configuration as following:
  .clkctrl_offs = DRA7XX_CM_PCIE_CLKSTCTRL_OFFSET,
  .rstctrl_offs = DRA7XX_RM_L3INIT_RSTCTRL_OFFSET,
  .modulemode   = MODULEMODE_SWCTRL,
which is completely wrong because DRA7XX_CM_PCIE_CLKSTCTRL_OFFSET
is clockdomain ctrl register and NOT module ctrl register.
And they have diffrent allowed values for bits[0,1]:
CLKTRCTRL?????????MODULEMODE??????????????????????????????????
0x0:?NO_SLEEP?????0x0:?Module?is?disabled?by?SW.??????????????
0x1:?SW_SLEEP?????0x1:?Module?is?managed?automatically?by?HW??
0x2:?SW_WKUP??????0x2:?Module?is?explicitly?enabled.??????????
0x3:?HW_AUTO??????0x3:?Reserved??

As result, following message can be seen during suspend:
  "omap_hwmod: pcie1: _wait_target_disable failed"

Fix it by removing .modulemode from pcie1/2 hwmods and, in that
way, prevent clockdomain ctrl register writing from HWMOD core.

Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
---

More over, it looks like pcie1/2 hwmods are fake and have to be dropped at all.
The real HWMODs are PCIESS1/2.
Unfortunatelly, not all information on PCIE is public, so
I could be wrong here.
---
 arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
index ffd6604..a428b2d 100644
--- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
@@ -1478,7 +1478,6 @@ static struct omap_hwmod dra7xx_pcie1_hwmod = {
 	.prcm = {
 		.omap4 = {
 			.clkctrl_offs	= DRA7XX_CM_PCIE_CLKSTCTRL_OFFSET,
-			.modulemode	= MODULEMODE_SWCTRL,
 		},
 	},
 };
@@ -1492,7 +1491,6 @@ static struct omap_hwmod dra7xx_pcie2_hwmod = {
 	.prcm = {
 		.omap4 = {
 			.clkctrl_offs = DRA7XX_CM_PCIE_CLKSTCTRL_OFFSET,
-			.modulemode   = MODULEMODE_SWCTRL,
 		},
 	},
 };
-- 
1.9.1

^ permalink raw reply related	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2015-02-13 14:15 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-02-03 15:51 [PATCH] ARM: dra7xx: hwmod: drop .modulemode from pcie1/2 hwmods grygorii.strashko at linaro.org
2015-02-09  8:50 ` Kishon Vijay Abraham I
2015-02-09 10:28   ` Grygorii.Strashko@linaro.org
2015-02-09 13:24     ` Kishon Vijay Abraham I
2015-02-09 14:52       ` Grygorii.Strashko@linaro.org
2015-02-12  6:43         ` Kishon Vijay Abraham I
2015-02-12  8:35           ` Grygorii.Strashko@linaro.org
2015-02-12 15:08             ` Paul Walmsley
2015-02-12 16:24               ` Grygorii.Strashko@linaro.org
2015-02-12 16:27                 ` Paul Walmsley
2015-02-12 16:45                   ` Paul Walmsley
2015-02-13 14:15                     ` Kishon Vijay Abraham I

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