x86: edison: Enable SD slot
Enable SD slot on Intel Edison platform.
By default firmware doesn't put device on active state. Thus,
we have to do this explicitly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/dts/edison.dts b/arch/x86/dts/edison.dts
index c048765..df24aa0 100644
--- a/arch/x86/dts/edison.dts
+++ b/arch/x86/dts/edison.dts
@@ -84,15 +84,10 @@
reg = <0xff3fc000 0x1000>;
};
-/*
- * FIXME: For now U-Boot DM model doesn't allow to power up this controller.
- * Enabling it will make U-Boot hang.
- *
sdcard: mmc@ff3fa000 {
compatible = "intel,sdhci-tangier";
reg = <0xff3fa000 0x1000>;
};
- */
pmu: power@ff00b000 {
compatible = "intel,pmu-mid";
diff --git a/board/intel/edison/edison.c b/board/intel/edison/edison.c
index 5faf3c5..d80ee3a 100644
--- a/board/intel/edison/edison.c
+++ b/board/intel/edison/edison.c
@@ -13,9 +13,19 @@
#include <linux/usb/gadget.h>
#include <asm/cache.h>
+#include <asm/pmu.h>
#include <asm/scu.h>
#include <asm/u-boot-x86.h>
+/* List of Intel Tangier LSSs */
+#define PMU_LSS_TANGIER_SDIO0_01 1
+
+int board_early_init_r(void)
+{
+ pmu_turn_power(PMU_LSS_TANGIER_SDIO0_01, true);
+ return 0;
+}
+
static struct dwc3_device dwc3_device_data = {
.maximum_speed = USB_SPEED_HIGH,
.base = CONFIG_SYS_USB_OTG_BASE,
diff --git a/configs/edison_defconfig b/configs/edison_defconfig
index 4687544..cac6e42 100644
--- a/configs/edison_defconfig
+++ b/configs/edison_defconfig
@@ -4,6 +4,7 @@
CONFIG_VENDOR_INTEL=y
CONFIG_TARGET_EDISON=y
CONFIG_SMP=y
+CONFIG_BOARD_EARLY_INIT_R=y
CONFIG_LAST_STAGE_INIT=y
CONFIG_HUSH_PARSER=y
# CONFIG_CMDLINE_EDITING is not set