1 files changed, 93 insertions, 0 deletions
diff --git a/package/boot/uboot-layerscape/patches/0056-mmc-fsl_esdhc-disable-sdhc2-when-no-card-inserted-fo.patch b/package/boot/uboot-layerscape/patches/0056-mmc-fsl_esdhc-disable-sdhc2-when-no-card-inserted-fo.patch
new file mode 100644
index 0000000..c95639f
--- /dev/null
+++ b/package/boot/uboot-layerscape/patches/0056-mmc-fsl_esdhc-disable-sdhc2-when-no-card-inserted-fo.patch
@@ -0,0 +1,93 @@
+From 22424b4b25faefec704556d47751ad54c811ee09 Mon Sep 17 00:00:00 2001
+From: Yangbo Lu <yangbo.lu@nxp.com>
+Date: Wed, 15 Jun 2016 15:45:12 +0800
+Subject: [PATCH 56/93] mmc: fsl_esdhc: disable sdhc2 when no card inserted
+ for ls1012aqds
+
+This is a temporary workaround patch for ls1012aqds becasue there
+was host controller hardware issue found on some QDS boards when
+there was no eMMC adapter card inserted. This would cause below
+continious error messages in linux. So this patch is to disable
+sdhc2 when finding there isn't card inserted.
+"mmc1: Controller never released inhibit bit(s)."
+
+Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
+---
+ board/freescale/ls1012aqds/ls1012aqds.c |   11 +++++++++++
+ drivers/mmc/fsl_esdhc.c                 |    9 +++++++++
+ include/fdt_support.h                   |    4 +++-
+ 3 files changed, 23 insertions(+), 1 deletion(-)
+
+diff --git a/board/freescale/ls1012aqds/ls1012aqds.c b/board/freescale/ls1012aqds/ls1012aqds.c
+index b7365e8..56004ea 100644
+--- a/board/freescale/ls1012aqds/ls1012aqds.c
++++ b/board/freescale/ls1012aqds/ls1012aqds.c
+@@ -161,6 +161,17 @@ int select_i2c_ch_pca9547(u8 ch)
+ 	return 0;
+ }
+ 
++int mmc_check_sdhc2_card(void)
++{
++	u8 card_id;
++
++	card_id = (QIXIS_READ(present2) & 0xe0) >> 5;
++	if (card_id == 0x7)
++		return 0;
++	else
++		return 1;
++}
++
+ int dram_init(void)
+ {
+ 	mmdc_init();
+diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
+index 2c6e175..98f3cca 100644
+--- a/drivers/mmc/fsl_esdhc.c
++++ b/drivers/mmc/fsl_esdhc.c
+@@ -774,6 +774,11 @@ int fsl_esdhc_mmc_init(bd_t *bis)
+ #endif
+ }
+ 
++__weak int mmc_check_sdhc2_card(void)
++{
++	return 1;
++}
++
+ #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
+ void mmc_adapter_card_type_ident(void)
+ {
+@@ -817,6 +822,7 @@ void mmc_adapter_card_type_ident(void)
+ void fdt_fixup_esdhc(void *blob, bd_t *bd)
+ {
+ 	const char *compat = "fsl,esdhc";
++	const char *compat1 = "fsl,ls1012a-esdhc1";
+ 
+ #ifdef CONFIG_FSL_ESDHC_PIN_MUX
+ 	if (!hwconfig("esdhc")) {
+@@ -839,5 +845,8 @@ void fdt_fixup_esdhc(void *blob, bd_t *bd)
+ #endif
+ 	do_fixup_by_compat(blob, compat, "status", "okay",
+ 			   4 + 1, 1);
++	if (!mmc_check_sdhc2_card())
++		do_fixup_by_compat(blob, compat1, "status", "disabled",
++				   4 + 1, 1);
+ }
+ #endif
+diff --git a/include/fdt_support.h b/include/fdt_support.h
+index 296add0..2e66eb1 100644
+--- a/include/fdt_support.h
++++ b/include/fdt_support.h
+@@ -240,7 +240,9 @@ int arch_fixup_memory_node(void *blob);
+ 
+ int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
+ 			    u32 height, u32 stride, const char *format);
+-
++#ifdef CONFIG_FSL_ESDHC
++int mmc_check_sdhc2_card(void);
++#endif
+ #endif /* ifdef CONFIG_OF_LIBFDT */
+ 
+ #ifdef USE_HOSTCC
+-- 
+1.7.9.5
+