From mboxrd@z Thu Jan 1 00:00:00 1970 From: santosh.shilimkar@ti.com (Santosh Shilimkar) Date: Sun, 4 Sep 2011 19:24:10 +0530 Subject: [PATCH 09/25] OMAP4: PM: Avoid omap4_pm_init() on OMAP4430 ES1.0 In-Reply-To: <1315144466-9395-1-git-send-email-santosh.shilimkar@ti.com> References: <1315144466-9395-1-git-send-email-santosh.shilimkar@ti.com> Message-ID: <1315144466-9395-10-git-send-email-santosh.shilimkar@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Cc: Kevin Hilman --- arch/arm/mach-omap2/pm44xx.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c index 35ba028..0154363 100644 --- a/arch/arm/mach-omap2/pm44xx.c +++ b/arch/arm/mach-omap2/pm44xx.c @@ -122,6 +122,11 @@ 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); -- 1.7.4.1