mmc: arm_pl180_mmci: Add configuration for ST-Ericsson Ux500v2

For the eMMC on ST-Ericsson Ux500v2 we need slightly different
configuration values. Use the existing switch statement to match
the peripheral ID of Ux500v2 (0x10480180) and override the necessary
values to make the eMMC work on devices with ST-Ericsson Ux500.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Tested-by: Patrice Chotard <patrice.chotard@foss.st.com> on stm32f769-disco
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>

diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c
index 809b865..f99b5f9 100644 (file)
--- a/drivers/mmc/arm_pl180_mmci.c
+++ b/drivers/mmc/arm_pl180_mmci.c
@@ -443,22 +443,30 @@ static int arm_pl180_mmc_probe(struct udevice *dev)
                            SDI_CLKCR_HWFC_EN;
        host->clock_in = clk_get_rate(&clk);
 
+       cfg->name = dev->name;
+       cfg->voltages = VOLTAGE_WINDOW_SD;
+       cfg->host_caps = 0;
+       cfg->f_min = host->clock_in / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1));
+       cfg->f_max = MMC_CLOCK_MAX;
+       cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
+
        periphid = dev_read_u32_default(dev, "arm,primecell-periphid", 0);
        switch (periphid) {
        case STM32_MMCI_ID: /* stm32 variant */
                host->version2 = false;
                break;
+       case UX500V2_MMCI_ID:
+               host->pwr_init = SDI_PWR_OPD | SDI_PWR_PWRCTRL_ON;
+               host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V2 | SDI_CLKCR_CLKEN |
+                                   SDI_CLKCR_HWFC_EN;
+               cfg->voltages = VOLTAGE_WINDOW_MMC;
+               cfg->f_min = host->clock_in / (2 + SDI_CLKCR_CLKDIV_INIT_V2);
+               host->version2 = true;
+               break;
        default:
                host->version2 = true;
        }
 
-       cfg->name = dev->name;
-       cfg->voltages = VOLTAGE_WINDOW_SD;
-       cfg->host_caps = 0;
-       cfg->f_min = host->clock_in / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1));
-       cfg->f_max = MMC_CLOCK_MAX;
-       cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
-
        gpio_request_by_name(dev, "cd-gpios", 0, &host->cd_gpio, GPIOD_IS_IN);
 
        ret = mmc_of_parse(dev, cfg);

diff --git a/drivers/mmc/arm_pl180_mmci.h b/drivers/mmc/arm_pl180_mmci.h
index 61ee96a..15c29be 100644 (file)
--- a/drivers/mmc/arm_pl180_mmci.h
+++ b/drivers/mmc/arm_pl180_mmci.h
@@ -142,6 +142,7 @@
 #define SDI_FIFO_BURST_SIZE    8
 
 #define STM32_MMCI_ID          0x00880180
+#define UX500V2_MMCI_ID                0x10480180
 
 struct sdi_registers {
        u32 power;              /* 0x00*/