From 361b02f3538bc5603a426ed3bb04129a8d7b9a67 Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Fri, 11 Mar 2011 16:13:09 +0530 Subject: [PATCH] ARM: OMAP4: PM: Avoid omap4_pm_init() on OMAP4430 ES1.0 On OMAP4430 ES1.0, Power Management features are not supported. Avoid omap4_pm_init() on ES1.0 silicon so that we can continue to use same kernel binary to boot on all OMAP4 silicons. The ES1.0 boot failure with OMAP4 PM series was because of the clockdomain initialisation code. Hardware supervised clockdomain mode isn't functional for all clockdomains on OMAP4430 ES1.0 silicon so avoid the same. Signed-off-by: Santosh Shilimkar Reported-by: Kevin Hilman Acked-by: Jean Pihet Reviewed-by: Kevin Hilman Tested-by: Vishwanath BS Signed-off-by: Kevin Hilman --- arch/arm/mach-omap2/pm44xx.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c index 715035d0512a..35d392abcaa4 100644 --- a/arch/arm/mach-omap2/pm44xx.c +++ b/arch/arm/mach-omap2/pm44xx.c @@ -105,6 +105,11 @@ static int __init omap4_pm_init(void) if (!cpu_is_omap44xx()) return -ENODEV; + if (omap_rev() == OMAP4430_REV_ES1_0) { + WARN(1, "Power Management not supported on OMAP4430 ES1.0\n"); + return -ENODEV; + } + pr_err("Power Management for TI OMAP4.\n"); ret = pwrdm_for_each(pwrdms_setup, NULL);