From 6f0b7caa671f92c2d4676c84381d17fb90f7d2cd Mon Sep 17 00:00:00 2001 From: Rajeshwari Shinde Date: Tue, 29 Oct 2013 12:53:13 +0530 Subject: DWMMC: SMDK5420: Disable SMU for eMMC SMDK5420 has a new Security Management Unit added for dwmmc driver, hence, configuring the control registers to support booting via eMMC. Signed-off-by: Alim Akhtar Signed-off-by: Rajeshwari Shinde Acked-by: Simon Glass Acked-by: Jaehoon Chung Acked-by: Pantelis Antoniou --- drivers/mmc/dw_mmc.c | 11 +++++++++++ drivers/mmc/exynos_dw_mmc.c | 3 +++ 2 files changed, 14 insertions(+) (limited to 'drivers/mmc') diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index 174e3b5..1e0f72b 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -11,6 +11,7 @@ #include #include #include +#include #define PAGE_SIZE 4096 @@ -301,6 +302,16 @@ static int dwmci_init(struct mmc *mmc) struct dwmci_host *host = (struct dwmci_host *)mmc->priv; u32 fifo_size; + if (host->quirks & DWMCI_QUIRK_DISABLE_SMU) { + dwmci_writel(host, EMMCP_MPSBEGIN0, 0); + dwmci_writel(host, EMMCP_SEND0, 0); + dwmci_writel(host, EMMCP_CTRL0, + MPSCTRL_SECURE_READ_BIT | + MPSCTRL_SECURE_WRITE_BIT | + MPSCTRL_NON_SECURE_READ_BIT | + MPSCTRL_NON_SECURE_WRITE_BIT | MPSCTRL_VALID); + } + dwmci_writel(host, DWMCI_PWREN, 1); if (!dwmci_wait_reset(host, DWMCI_RESET_ALL)) { diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c index 1f2c53f..a0f1511 100644 --- a/drivers/mmc/exynos_dw_mmc.c +++ b/drivers/mmc/exynos_dw_mmc.c @@ -62,6 +62,9 @@ int exynos_dwmci_add_port(int index, u32 regbase, int bus_width, u32 clksel) host->name = "EXYNOS DWMMC"; host->ioaddr = (void *)regbase; host->buswidth = bus_width; +#ifdef CONFIG_EXYNOS5420 + host->quirks = DWMCI_QUIRK_DISABLE_SMU; +#endif if (clksel) { host->clksel_val = clksel; -- cgit v1.1