diff options
| -rw-r--r-- | board/hisilicon/hikey/hikey.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/board/hisilicon/hikey/hikey.c b/board/hisilicon/hikey/hikey.c index c513d0a..5357f87 100644 --- a/board/hisilicon/hikey/hikey.c +++ b/board/hisilicon/hikey/hikey.c @@ -295,13 +295,47 @@ static void mmc1_reset_clk(void) data = readl(&peri_sc->rst0_stat); } while (!(data & PERI_RST0_MMC1)); - /* unreset mmc0 clock domain */ + /* unreset mmc1 clock domain */ writel(PERI_RST0_MMC1, &peri_sc->rst0_dis); do { data = readl(&peri_sc->rst0_stat); } while (data & PERI_RST0_MMC1); } +static void mmc0_reset_clk(void) +{ + unsigned int data; + + /* disable mmc0 bus clock */ + hi6220_clk_disable(PERI_CLK0_MMC0, &peri_sc->clk0_dis); + + /* enable mmc0 bus clock */ + hi6220_clk_enable(PERI_CLK0_MMC0, &peri_sc->clk0_en); + + /* reset mmc0 clock domain */ + writel(PERI_RST0_MMC0, &peri_sc->rst0_en); + + /* bypass mmc0 clock phase */ + data = readl(&peri_sc->ctrl2); + data |= 3; + writel(data, &peri_sc->ctrl2); + + /* disable low power */ + data = readl(&peri_sc->ctrl13); + data |= 1 << 3; + writel(data, &peri_sc->ctrl13); + do { + data = readl(&peri_sc->rst0_stat); + } while (!(data & PERI_RST0_MMC0)); + + /* unreset mmc0 clock domain */ + writel(PERI_RST0_MMC0, &peri_sc->rst0_dis); + do { + data = readl(&peri_sc->rst0_stat); + } while (data & PERI_RST0_MMC0); +} + + /* PMU SSI is the IP that maps the external PMU hi6553 registers as IO */ static void hi6220_pmussi_init(void) { @@ -349,7 +383,8 @@ static int init_dwmmc(void) #ifdef CONFIG_MMC_DW - /* mmc0 clocks are already configured by ATF */ + /* mmc0 pll is already configured by ATF */ + mmc0_reset_clk(); ret = hi6220_pinmux_config(PERIPH_ID_SDMMC0); if (ret) printf("%s: Error configuring pinmux for eMMC (%d)\n" |