The System Bus is not available by default on the ROM boot mode of
PH1-LD20. To use devices connected to the System Bus, such as the
Micro Support Card, it is necessary to set up pin-muxing and some
System Bus Controller register.
Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---
arch/arm/mach-uniphier/early-pinctrl/Makefile | 1 +
.../early-pinctrl/early-pinctrl-ld20.c | 32 ++++++++++++++++++++++
arch/arm/mach-uniphier/init.h | 1 +
arch/arm/mach-uniphier/init/init-ld20.c | 2 ++
arch/arm/mach-uniphier/sbc/Makefile | 2 +-
5 files changed, 37 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/mach-uniphier/early-pinctrl/early-pinctrl-ld20.c
diff --git a/arch/arm/mach-uniphier/early-pinctrl/Makefile
b/arch/arm/mach-uniphier/early-pinctrl/Makefile
index dc4064c..a103902 100644
--- a/arch/arm/mach-uniphier/early-pinctrl/Makefile
+++ b/arch/arm/mach-uniphier/early-pinctrl/Makefile
@@ -3,3 +3,4 @@
#
obj-$(CONFIG_ARCH_UNIPHIER_SLD3) += early-pinctrl-sld3.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD20) += early-pinctrl-ld20.o
diff --git a/arch/arm/mach-uniphier/early-pinctrl/early-pinctrl-ld20.c
b/arch/arm/mach-uniphier/early-pinctrl/early-pinctrl-ld20.c
new file mode 100644
index 0000000..537deaf
--- /dev/null
+++ b/arch/arm/mach-uniphier/early-pinctrl/early-pinctrl-ld20.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2016 Masahiro Yamada <yamada.masah...@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include "../init.h"
+#include "../sg-regs.h"
+
+int uniphier_ld20_early_pin_init(const struct uniphier_board_data *bd)
+{
+ /* Comment format: PAD Name -> Function Name */
+ sg_set_pinsel(0, 0, 8, 4); /* XECS1 -> XECS1 */
+ sg_set_pinsel(1, 0, 8, 4); /* ERXW -> ERXW */
+ sg_set_pinsel(2, 0, 8, 4); /* XERWE1 -> XERWE1 */
+ sg_set_pinsel(6, 2, 8, 4); /* XNFRE -> XERWE0 */
+ sg_set_pinsel(7, 2, 8, 4); /* XNFWE -> ES0 */
+ sg_set_pinsel(8, 2, 8, 4); /* NFALE -> ES1 */
+ sg_set_pinsel(9, 2, 8, 4); /* NFCLE -> ES2 */
+ sg_set_pinsel(10, 2, 8, 4); /* NFD0 -> ED0 */
+ sg_set_pinsel(11, 2, 8, 4); /* NFD1 -> ED1 */
+ sg_set_pinsel(12, 2, 8, 4); /* NFD2 -> ED2 */
+ sg_set_pinsel(13, 2, 8, 4); /* NFD3 -> ED3 */
+ sg_set_pinsel(14, 2, 8, 4); /* NFD4 -> ED4 */
+ sg_set_pinsel(15, 2, 8, 4); /* NFD5 -> ED5 */
+ sg_set_pinsel(16, 2, 8, 4); /* NFD6 -> ED6 */
+ sg_set_pinsel(17, 2, 8, 4); /* NFD7 -> ED7 */
+ sg_set_iectrl_range(0, 2);
+ sg_set_iectrl_range(6, 17);
+
+ return 0;
+}
diff --git a/arch/arm/mach-uniphier/init.h b/arch/arm/mach-uniphier/init.h
index f5b3fa8..5a0ebeb 100644
--- a/arch/arm/mach-uniphier/init.h
+++ b/arch/arm/mach-uniphier/init.h
@@ -90,6 +90,7 @@ int uniphier_pxs2_early_clk_init(const struct
uniphier_board_data *bd);
int uniphier_ld20_early_clk_init(const struct uniphier_board_data *bd);
int uniphier_sld3_early_pin_init(const struct uniphier_board_data *bd);
+int uniphier_ld20_early_pin_init(const struct uniphier_board_data *bd);
int uniphier_ld4_umc_init(const struct uniphier_board_data *bd);
int uniphier_pro4_umc_init(const struct uniphier_board_data *bd);
diff --git a/arch/arm/mach-uniphier/init/init-ld20.c
b/arch/arm/mach-uniphier/init/init-ld20.c
index 0ad264c..660ad45 100644
--- a/arch/arm/mach-uniphier/init/init-ld20.c
+++ b/arch/arm/mach-uniphier/init/init-ld20.c
@@ -13,6 +13,8 @@
int uniphier_ld20_init(const struct uniphier_board_data *bd)
{
uniphier_sbc_init_savepin(bd);
+ uniphier_pxs2_sbc_init(bd);
+ uniphier_ld20_early_pin_init(bd);
support_card_reset();
diff --git a/arch/arm/mach-uniphier/sbc/Makefile
b/arch/arm/mach-uniphier/sbc/Makefile
index 3c1e92a..236f136 100644
--- a/arch/arm/mach-uniphier/sbc/Makefile
+++ b/arch/arm/mach-uniphier/sbc/Makefile
@@ -9,4 +9,4 @@ obj-$(CONFIG_ARCH_UNIPHIER_SLD8) += sbc-savepin.o
sbc-ld4.o
obj-$(CONFIG_ARCH_UNIPHIER_PRO5) += sbc-savepin.o
obj-$(CONFIG_ARCH_UNIPHIER_PXS2) += sbc-savepin.o sbc-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD6B) += sbc-savepin.o sbc-pxs2.o
-obj-$(CONFIG_ARCH_UNIPHIER_LD20) += sbc-savepin.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD20) += sbc-savepin.o sbc-pxs2.o
--
1.9.1
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