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-rw-r--r--Documentation/devicetree/bindings/arm/ste-nomadik.txt3
-rw-r--r--arch/arm/boot/dts/ste-nomadik-s8815.dts4
-rw-r--r--arch/arm/boot/dts/ste-nomadik-stn8815.dtsi13
-rw-r--r--arch/arm/mach-nomadik/cpu-8815.c48
4 files changed, 67 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/arm/ste-nomadik.txt b/Documentation/devicetree/bindings/arm/ste-nomadik.txt
index a97316073afe..19bca04b81c9 100644
--- a/Documentation/devicetree/bindings/arm/ste-nomadik.txt
+++ b/Documentation/devicetree/bindings/arm/ste-nomadik.txt
@@ -21,4 +21,7 @@ usb-s8815 {
interrupts = <19 0x1>;
interrupt-parent = <&gpio3>;
};
+ mmcsd-gpio {
+ gpios = <&gpio3 16 0x1>;
+ };
};
diff --git a/arch/arm/boot/dts/ste-nomadik-s8815.dts b/arch/arm/boot/dts/ste-nomadik-s8815.dts
index cc777109f98f..b28fbf3408e3 100644
--- a/arch/arm/boot/dts/ste-nomadik-s8815.dts
+++ b/arch/arm/boot/dts/ste-nomadik-s8815.dts
@@ -22,5 +22,9 @@
interrupts = <19 0x1>;
interrupt-parent = <&gpio3>;
};
+ /* This will bias the MMC/SD card detect line */
+ mmcsd-gpio {
+ gpios = <&gpio3 16 0x1>;
+ };
};
};
diff --git a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
index f129425883a4..0164edc78eed 100644
--- a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
+++ b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
@@ -190,5 +190,18 @@
interrupt-parent = <&vica>;
interrupts = <10>;
};
+
+ mmcsd: sdi@101f6000 {
+ compatible = "arm,pl18x", "arm,primecell";
+ reg = <0x101f6000 0x1000>;
+ interrupt-parent = <&vica>;
+ interrupts = <22>;
+ max-frequency = <48000000>;
+ bus-width = <4>;
+ mmc-cap-mmc-highspeed;
+ mmc-cap-sd-highspeed;
+ cd-gpios = <&gpio3 15 0x1>;
+ cd-inverted;
+ };
};
};
diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c
index 339496f15138..5ad301e4eb2f 100644
--- a/arch/arm/mach-nomadik/cpu-8815.c
+++ b/arch/arm/mach-nomadik/cpu-8815.c
@@ -36,6 +36,7 @@
#include <linux/of_platform.h>
#include <linux/mtd/fsmc.h>
#include <linux/gpio.h>
+#include <linux/amba/mmci.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
@@ -297,6 +298,50 @@ static int __init cpu8815_eth_init(void)
}
device_initcall(cpu8815_eth_init);
+/*
+ * TODO:
+ * cannot be set from device tree, convert to a proper DT
+ * binding.
+ */
+static struct mmci_platform_data mmcsd_plat_data = {
+ .ocr_mask = MMC_VDD_29_30,
+};
+
+/*
+ * This GPIO pin turns on a line that is used to detect card insertion
+ * on this board.
+ */
+static int __init cpu8815_mmcsd_init(void)
+{
+ struct device_node *cdbias;
+ int gpio, err;
+
+ cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio");
+ if (!cdbias) {
+ pr_info("could not find MMC/SD card detect bias node\n");
+ return 0;
+ }
+ gpio = of_get_gpio(cdbias, 0);
+ if (gpio < 0) {
+ pr_info("could not obtain MMC/SD card detect bias GPIO\n");
+ return 0;
+ }
+ err = gpio_request(gpio, "card detect bias");
+ if (err) {
+ pr_info("failed to request card detect bias GPIO %d\n", gpio);
+ return -ENODEV;
+ }
+ err = gpio_direction_output(gpio, 0);
+ if (err){
+ pr_info("failed to set GPIO %d as output, low\n", gpio);
+ return err;
+ }
+ pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio);
+ return 0;
+}
+device_initcall(cpu8815_mmcsd_init);
+
+
/* These are mostly to get the right device names for the clock lookups */
static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO0_BASE,
@@ -319,7 +364,8 @@ static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = {
"rtc-pl031", NULL),
OF_DEV_AUXDATA("stericsson,fsmc-nand", NOMADIK_FSMC_BASE,
"fsmc-nand", &cpu8815_nand_data),
-
+ OF_DEV_AUXDATA("arm,primecell", NOMADIK_SDI_BASE,
+ "mmci", &mmcsd_plat_data),
{ /* sentinel */ },
};