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[2/2] OMAP3: PM: remove TWL4030 A2S script before reboot

Message ID 1265226207-22971-3-git-send-email-mturquette@ti.com (mailing list archive)
State Changes Requested, archived
Delegated to: Paul Walmsley
Headers show

Commit Message

Mike Turquette Feb. 3, 2010, 7:43 p.m. UTC
None
diff mbox

Patch

diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index 0d30e53..0d6d1d6 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -28,6 +28,7 @@ 
 #include <linux/bitops.h>
 #include <linux/err.h>
 #include <linux/cpufreq.h>
+#include <linux/i2c/twl.h>
 
 #include <plat/cpu.h>
 #include <plat/clock.h>
@@ -311,6 +312,8 @@  struct clk_functions omap2_clk_functions = {
  */
 void omap2_clk_prepare_for_reboot(void)
 {
+	int err = 0;
+
 	/* REVISIT: Not ready for 343x */
 #if 0
 	u32 rate;
@@ -321,6 +324,18 @@  void omap2_clk_prepare_for_reboot(void)
 	rate = clk_get_rate(sclk);
 	clk_set_rate(vclk, rate);
 #endif
+
+	/*
+	 * PRCM on OMAP3 will drive SYS_OFFMODE low during DPLL3 warm reset.
+	 * This causes Gaia sleep script to execute, usually killing VDD1 and
+	 * VDD2 while code is running.  WA is to disable the sleep script
+	 * before warm reset.
+	 */
+#ifdef CONFIG_TWL4030_POWER
+	err = twl4030_remove_script(TWL4030_SLEEP_SCRIPT);
+	if (err)
+		pr_err("twl4030: error trying to disable sleep script!\n");
+#endif
 }
 
 void omap3_clk_lock_dpll5(void)