From 5eb4150e84e55057a3504b2cb06d7f5c145c866f Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 28 Apr 2016 15:37:15 +0900 Subject: 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 --- arch/arm/mach-uniphier/early-pinctrl/Makefile | 1 + .../early-pinctrl/early-pinctrl-ld20.c | 32 ++++++++++++++++++++++ 2 files changed, 33 insertions(+) create mode 100644 arch/arm/mach-uniphier/early-pinctrl/early-pinctrl-ld20.c (limited to 'arch/arm/mach-uniphier/early-pinctrl') diff --git a/arch/arm/mach-uniphier/early-pinctrl/Makefile b/arch/arm/mach-uniphier/early-pinctrl/Makefile index dc4064c05b..a1039025ca 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 0000000000..537deaf232 --- /dev/null +++ b/arch/arm/mach-uniphier/early-pinctrl/early-pinctrl-ld20.c @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2016 Masahiro Yamada + * + * 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; +} -- cgit v1.2.1