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| author | Tom Rini <trini@konsulko.com> | 2017-01-17 11:39:43 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-01-17 11:39:43 -0500 |
| commit | bfd07670a48d9fbf22646c93e07dcd8cbc8d0864 (patch) | |
| tree | 3ce5c9c53c29c93bd72adfecfc0085b8a9346ad6 /arch/arm/mach-uniphier/clk/clk-early-sld3.c | |
| parent | 373ae16c9282cf6dfb39cd6e1b8ad26098635ca2 (diff) | |
| parent | 2cfa35c47b9c9b80c8ff084f55391a03fd575956 (diff) | |
| download | u-boot-imx-bfd07670a48d9fbf22646c93e07dcd8cbc8d0864.zip u-boot-imx-bfd07670a48d9fbf22646c93e07dcd8cbc8d0864.tar.gz u-boot-imx-bfd07670a48d9fbf22646c93e07dcd8cbc8d0864.tar.bz2 | |
Merge branch 'master' of git://git.denx.de/u-boot-uniphier
- Enable eMMC driver for LD11/LD20 SoCs
- Refactoring of SoC init code
- Bug fix of pinctrl driver
Diffstat (limited to 'arch/arm/mach-uniphier/clk/clk-early-sld3.c')
| -rw-r--r-- | arch/arm/mach-uniphier/clk/clk-early-sld3.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/clk/clk-early-sld3.c b/arch/arm/mach-uniphier/clk/clk-early-sld3.c new file mode 100644 index 0000000..3235da2 --- /dev/null +++ b/arch/arm/mach-uniphier/clk/clk-early-sld3.c @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2011-2014 Panasonic Corporation + * Copyright (C) 2015-2017 Socionext Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <spl.h> +#include <linux/io.h> + +#include "../init.h" +#include "../sc-regs.h" + +void uniphier_sld3_early_clk_init(void) +{ + u32 tmp; + + /* deassert reset */ + if (spl_boot_device() != BOOT_DEVICE_NAND) { + tmp = readl(SC_RSTCTRL); + tmp &= ~SC_RSTCTRL_NRST_NAND; + writel(tmp, SC_RSTCTRL); + }; + + /* provide clocks */ + tmp = readl(SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI; + writel(tmp, SC_CLKCTRL); + readl(SC_CLKCTRL); /* dummy read */ +} |