From: Hardik Patel <hardik.pa...@volansystech.com>
Signed-off-by: Hardik Patel <hardik.pa...@volansystech.com>
---
arch/arm/cpu/armv7/omap4/sdram_elpida.c | 2 +-
board/ti/panda/panda.c | 24 ++++++++++++++++++++++++
2 files changed, 25 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv7/omap4/sdram_elpida.c
b/arch/arm/cpu/armv7/omap4/sdram_elpida.c
index e4c8316..9fbdeea 100644
--- a/arch/arm/cpu/armv7/omap4/sdram_elpida.c
+++ b/arch/arm/cpu/armv7/omap4/sdram_elpida.c
@@ -123,7 +123,7 @@ static void emif_get_reg_dump_sdp(u32 emif_nr, const struct
emif_regs **regs)
*regs = &emif_regs_elpida_200_mhz_2cs;
else if (omap4_rev == OMAP4430_ES2_3)
*regs = &emif_regs_elpida_400_mhz_1cs;
- else if (omap4_rev < OMAP4470_ES1_0)
+ else if (omap4_rev < OMAP4470_ES1_0 && !is_panda_es_rev_b3())
*regs = &emif_regs_elpida_400_mhz_2cs;
else
*regs = &emif_regs_elpida_400_mhz_1cs;
diff --git a/board/ti/panda/panda.c b/board/ti/panda/panda.c
index c104024..5a7f80a 100644
--- a/board/ti/panda/panda.c
+++ b/board/ti/panda/panda.c
@@ -122,6 +122,30 @@ int get_board_revision(void)
return board_id;
}
+/*
+* Routine: is_panda_es_rev_b3
+* Description: Detect if we are running on B3 version of ES panda board,
+* This can be done by reading the level of GPIO 171
+* and checking the processor revisions.
+* GPIO171: 1 => Panda ES Rev B3
+*/
+u8 is_panda_es_rev_b3(void)
+{
+ int processor_rev = omap_revision();
+ int ret = 0;
+
+ if ((processor_rev >= OMAP4460_ES1_0 &&
+ processor_rev <= OMAP4460_ES1_1)) {
+
+ /* Setup the mux for the common board ID pins (gpio 171) */
+ writew((IEN | M3), (*ctrl)->control_padconf_core_base +
UNIPRO_TX0);
+
+ /* if processor_rev is panda ES and GPIO171 is 1, it is rev b3
*/
+ ret = gpio_get_value(PANDA_BOARD_ID_2_GPIO);
+ }
+ return ret;
+}
+
/**
* @brief misc_init_r - Configure Panda board specific configurations
* such as power configurations, ethernet initialization as phase2 of
--
1.7.9.5
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