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ARM: uniphier: allow to use System Bus for ROM boot mode of PH1-LD20 

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.masahiro@socionext.com>
utp
Masahiro Yamada 2016-04-28 15:37:15 +09:00
parent 1dce5eb9de
commit 5eb4150e84
5 changed files with 37 additions and 1 deletions
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1
arch/arm/mach-uniphier/early-pinctrl/Makefile
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@ -3,3 +3,4 @@
#
obj-$(CONFIG_ARCH_UNIPHIER_SLD3) += early-pinctrl-sld3.o
obj-$(CONFIG_ARCH_UNIPHIER_LD20) += early-pinctrl-ld20.o

32
arch/arm/mach-uniphier/early-pinctrl/early-pinctrl-ld20.c 100644
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@ -0,0 +1,32 @@
/*
* Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@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;
}

1
arch/arm/mach-uniphier/init.h
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@ -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);

2
arch/arm/mach-uniphier/init/init-ld20.c
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@ -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();

2
arch/arm/mach-uniphier/sbc/Makefile
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@ -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