arm: baltos: active mPCIe slot

Baltos devices provide a mPCIe slot, whose power is turned off by default. This patch activates mPCIe slot in U-Boot, so that for example GSM modem can be already available in user space. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Reviewed-by: Tom Rini <trini@konsulko.com>

arm: baltos: active mPCIe slot
Baltos devices provide a mPCIe slot, whose power is turned off by default. This patch activates mPCIe slot in U-Boot, so that for example GSM modem can be already available in user space. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
Yegor Yefremov · Tom Rini
1 parent a970727067
Showing 1 changed file with 18 additions and 0 deletions Side-by-side Diff
board/vscom/baltos/board.c
@@ -39,6 +39,7 @@
 /* GPIO that controls power to DDR on EVM-SK */
 #define GPIO_DDR_VTT_EN		7
 #define DIP_S1			44
+#define MPCIE_SW		100
  
 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
  
@@ -330,6 +331,11 @@
 	return 0;
 }
  
+static struct module_pin_mux pcie_sw_pin_mux[] = {
+	{OFFSET(mii1_rxdv), (MODE(7) | PULLUDEN )},     /* GPIO3_4 */
+	{-1},
+};
+
 static struct module_pin_mux dip_pin_mux[] = {
 	{OFFSET(gpmc_ad12), (MODE(7) | RXACTIVE )},	/* GPIO1_12 */
 	{OFFSET(gpmc_ad13), (MODE(7)  | RXACTIVE )},	/* GPIO1_13 */
@@ -355,6 +361,18 @@
 			baltos_set_console();
 		}
 	}
+
+	/* turn power for the mPCIe slot */
+	configure_module_pin_mux(pcie_sw_pin_mux);
+	if (gpio_request(MPCIE_SW, "mpcie_sw")) {
+		printf("failed to export GPIO %d\n", MPCIE_SW);
+		return -ENODEV;
+	}
+	if (gpio_direction_output(MPCIE_SW, 1)) {
+		printf("failed to set GPIO %d direction\n", MPCIE_SW);
+		return -ENODEV;
+	}
+
 	setenv("board_name", model);
 #endif
...	...	@@ -39,6 +39,7 @@
39	39	/* GPIO that controls power to DDR on EVM-SK */
40	40	#define GPIO_DDR_VTT_EN 7
41	41	#define DIP_S1 44
	42	+#define MPCIE_SW 100
42	43
43	44	static struct ctrl_dev cdev = (struct ctrl_dev )CTRL_DEVICE_BASE;
44	45
...	...	@@ -330,6 +331,11 @@
330	331	return 0;
331	332	}
332	333
	334	+static struct module_pin_mux pcie_sw_pin_mux[] = {
	335	+ {OFFSET(mii1_rxdv), (MODE(7) \| PULLUDEN )}, /* GPIO3_4 */
	336	+ {-1},
	337	+};
	338	+
333	339	static struct module_pin_mux dip_pin_mux[] = {
334	340	{OFFSET(gpmc_ad12), (MODE(7) \| RXACTIVE )}, /* GPIO1_12 */
335	341	{OFFSET(gpmc_ad13), (MODE(7) \| RXACTIVE )}, /* GPIO1_13 */
...	...	@@ -355,6 +361,18 @@
355	361	baltos_set_console();
356	362	}
357	363	}
	364	+
	365	+ /* turn power for the mPCIe slot */
	366	+ configure_module_pin_mux(pcie_sw_pin_mux);
	367	+ if (gpio_request(MPCIE_SW, "mpcie_sw")) {
	368	+ printf("failed to export GPIO %d\n", MPCIE_SW);
	369	+ return -ENODEV;
	370	+ }
	371	+ if (gpio_direction_output(MPCIE_SW, 1)) {
	372	+ printf("failed to set GPIO %d direction\n", MPCIE_SW);
	373	+ return -ENODEV;
	374	+ }
	375	+
358	376	setenv("board_name", model);
359	377	#endif
360	378