diff options
| author | Tom Rini <trini@konsulko.com> | 2017-08-21 07:16:16 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-08-21 07:16:16 -0400 |
| commit | 8197d92843952b376915fdbcbf67c723feab1532 (patch) | |
| tree | da0c744f5254b549498293dc2e148c59af0b9f8d /arch/arm/mach-uniphier/clk/clk-early-ld4.c | |
| parent | 2d7cb5b426e7e0cdf684d7f8029ad132d7a8d383 (diff) | |
| parent | 3444d1d40e9ee42ba7423f4fa6651703a8666bc1 (diff) | |
Merge git://git.denx.de/u-boot-uniphier
- Fix unmet direct dependencies warning
- Remove old sLD3 SoC support
- Update reset data
- Add dr_mode DT property to avoid warning
Diffstat (limited to 'arch/arm/mach-uniphier/clk/clk-early-ld4.c')
| -rw-r--r-- | arch/arm/mach-uniphier/clk/clk-early-ld4.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/clk/clk-early-ld4.c b/arch/arm/mach-uniphier/clk/clk-early-ld4.c new file mode 100644 index 0000000000..07b916dc9a --- /dev/null +++ b/arch/arm/mach-uniphier/clk/clk-early-ld4.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_ld4_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 */ +} |