From: Tero Kristo <t-kristo@ti.com>
Date: Thu, 10 Apr 2014 23:47:09 +0000 (-0700)
Subject: ARM: OMAP3: PM: remove access to PRM_VOLTCTRL register
X-Git-Tag: sz_161~25
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=refs%2Fheads%2Fpandora-3.2-.57-wip;hp=f9d387bd6b35294711e196967d8c9616cbff2cb4

ARM: OMAP3: PM: remove access to PRM_VOLTCTRL register

There is a solitary write to this register every wakeup from off-mode,
which isn't doing anything, so remove it.

Also note that modifying this register trashes any attempted
voltage scaling configuration and the change probably should
never have gotten merged in the first place.

[notasas@gmail.com: 3.2 backport]
Cc: Nishanth Menon <nm@ti.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
[tony@atomide.com: updated comments to describe regression]
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 16b2afeccf03..4bb119b2a4d5 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -445,10 +445,6 @@ void omap_sram_idle(void)
 		}
 		omap_uart_resume_idle(0);
 		omap_uart_resume_idle(1);
-		if (core_next_state == PWRDM_POWER_OFF)
-			omap2_prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF_MASK,
-					       OMAP3430_GR_MOD,
-					       OMAP3_PRM_VOLTCTRL_OFFSET);
 		pwrdm_post_transition(core_pwrdm);
 	}
 	omap3_intc_resume_idle();