From 019df879a93e266ac19f5eb00e4ee605db279b14 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 22 Sep 2015 00:27:41 +0900 Subject: ARM: uniphier: add ProXstream2 and PH1-LD6b support The DDR SDRAM initialization code has not been mainlined yet, but U-Boot proper should work. Signed-off-by: Masahiro Yamada --- arch/arm/mach-uniphier/early-clk/Makefile | 2 + .../early-clk/early-clk-proxstream2.c | 44 ++++++++++++++++++++++ 2 files changed, 46 insertions(+) create mode 100644 arch/arm/mach-uniphier/early-clk/early-clk-proxstream2.c (limited to 'arch/arm/mach-uniphier/early-clk') diff --git a/arch/arm/mach-uniphier/early-clk/Makefile b/arch/arm/mach-uniphier/early-clk/Makefile index 939795c26d..393ea96f90 100644 --- a/arch/arm/mach-uniphier/early-clk/Makefile +++ b/arch/arm/mach-uniphier/early-clk/Makefile @@ -3,3 +3,5 @@ obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD4) += early-clk-ph1-ld4.o obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO4) += early-clk-ph1-ld4.o obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD8) += early-clk-ph1-ld4.o obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO5) += early-clk-ph1-pro5.o +obj-$(CONFIG_ARCH_UNIPHIER_PROXSTREAM2) += early-clk-proxstream2.o +obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD6B) += early-clk-proxstream2.o diff --git a/arch/arm/mach-uniphier/early-clk/early-clk-proxstream2.c b/arch/arm/mach-uniphier/early-clk/early-clk-proxstream2.c new file mode 100644 index 0000000000..c303f16a57 --- /dev/null +++ b/arch/arm/mach-uniphier/early-clk/early-clk-proxstream2.c @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2015 Masahiro Yamada + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +int proxstream2_early_clk_init(const struct uniphier_board_data *bd) +{ + u32 tmp; + + /* deassert reset */ + if (spl_boot_device() != BOOT_DEVICE_NAND) { + tmp = readl(SC_RSTCTRL); + tmp &= ~SC_RSTCTRL_NRST_NAND; + writel(tmp, SC_RSTCTRL); + }; + + tmp = readl(SC_RSTCTRL4); + tmp |= SC_RSTCTRL4_NRST_UMCSB | SC_RSTCTRL4_NRST_UMCA2 | + SC_RSTCTRL4_NRST_UMCA1 | SC_RSTCTRL4_NRST_UMCA0 | + SC_RSTCTRL4_NRST_UMC32 | SC_RSTCTRL4_NRST_UMC31 | + SC_RSTCTRL4_NRST_UMC30; + writel(tmp, SC_RSTCTRL4); + readl(SC_RSTCTRL4); /* dummy read */ + + /* privide clocks */ + tmp = readl(SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI; + writel(tmp, SC_CLKCTRL); + + tmp = readl(SC_CLKCTRL4); + tmp |= SC_CLKCTRL4_CEN_UMCSB | SC_CLKCTRL4_CEN_UMC2 | + SC_CLKCTRL4_CEN_UMC1 | SC_CLKCTRL4_CEN_UMC0; + writel(tmp, SC_CLKCTRL4); + readl(SC_CLKCTRL4); /* dummy read */ + + return 0; +} -- cgit