From 8c16dd6fa7de448b36778275b456bf4ea53c3306 Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Fri, 18 Jul 2014 11:18:48 +0530 Subject: [PATCH] ARM: OMAP: Fix handling of errata i727 The errata is applicable on all OMAP4 (4430 and 4460/4470) and OMAP5 ES 1.0 devices. The current revision check erroneously implements this on all DRA7 varients and with DRA722 device (which has only 1 EMIF instance) infact causes an asynchronous abort and ends up masking it in CPSR, only to be uncovered once the kernel switches to userspace. Signed-off-by: Rajendra Nayak Signed-off-by: Sricharan R Signed-off-by: Lokesh Vutla --- arch/arm/cpu/armv7/omap-common/hwinit-common.c | 3 ++- arch/arm/include/asm/omap_common.h | 8 ++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c index 5f50a19801..1b4477f469 100644 --- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c +++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c @@ -123,7 +123,8 @@ void s_init(void) hw_data_init(); #ifdef CONFIG_SPL_BUILD - if (warm_reset() && (omap_revision() <= OMAP5430_ES1_0)) + if (warm_reset() && + (is_omap44xx() || (omap_revision() == OMAP5430_ES1_0))) force_emif_self_refresh(); #endif watchdog_init(); diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h index d1344ee94c..183823404d 100644 --- a/arch/arm/include/asm/omap_common.h +++ b/arch/arm/include/asm/omap_common.h @@ -595,6 +595,14 @@ static inline u32 omap_revision(void) return *omap_si_rev; } +#define OMAP44xx 0x44000000 + +static inline u8 is_omap44xx(void) +{ + extern u32 *const omap_si_rev; + return (*omap_si_rev & 0xFF000000) == OMAP44xx; +}; + #define OMAP54xx 0x54000000 static inline u8 is_omap54xx(void) -- 2.39.5