ARM: add support for the EET board, based on the i.MX31 pcm037 module
The "EET" variant of the pcm037 board has an OLED display, using a S6E63D6
display controller on the first SPI interface, using GPIO57 as a chip-select
for it. S6E63D6 is initialised in the boot-loader, so we only have to take care
of the LCD. EET also adds several buttons and LEDs on GPIOs. This patch adds a
"pcm037_variant=" kernel command line parameter to specify at boot-time which
board the kernel is running on, default is "pcm970", specify "eet" for the EET
board.
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx3/pcm037.c b/arch/arm/mach-mx3/pcm037.c
index d7b29b7..840cfda 100644
--- a/arch/arm/mach-mx3/pcm037.c
+++ b/arch/arm/mach-mx3/pcm037.c
@@ -52,6 +52,41 @@
#include <mach/mxc_nand.h>
#include "devices.h"
+#include "pcm037.h"
+
+static enum pcm037_board_variant pcm037_instance = PCM037_PCM970;
+
+static int __init pcm037_variant_setup(char *str)
+{
+ if (!strcmp("eet", str))
+ pcm037_instance = PCM037_EET;
+ else if (strcmp("pcm970", str))
+ pr_warning("Unknown pcm037 baseboard variant %s\n", str);
+
+ return 1;
+}
+
+/* Supported values: "pcm970" (default) and "eet" */
+__setup("pcm037_variant=", pcm037_variant_setup);
+
+enum pcm037_board_variant pcm037_variant(void)
+{
+ return pcm037_instance;
+}
+
+/* UART1 with RTS/CTS handshake signals */
+static unsigned int pcm037_uart1_handshake_pins[] = {
+ MX31_PIN_CTS1__CTS1,
+ MX31_PIN_RTS1__RTS1,
+ MX31_PIN_TXD1__TXD1,
+ MX31_PIN_RXD1__RXD1,
+};
+
+/* UART1 without RTS/CTS handshake signals */
+static unsigned int pcm037_uart1_pins[] = {
+ MX31_PIN_TXD1__TXD1,
+ MX31_PIN_RXD1__RXD1,
+};
static unsigned int pcm037_pins[] = {
/* I2C */
@@ -76,11 +111,6 @@
MX31_PIN_CSPI1_SS0__SS0,
MX31_PIN_CSPI1_SS1__SS1,
MX31_PIN_CSPI1_SS2__SS2,
- /* UART1 */
- MX31_PIN_CTS1__CTS1,
- MX31_PIN_RTS1__RTS1,
- MX31_PIN_TXD1__TXD1,
- MX31_PIN_RXD1__RXD1,
/* UART2 */
MX31_PIN_TXD2__TXD2,
MX31_PIN_RXD2__RXD2,
@@ -459,6 +489,22 @@
.sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
.vmode = FB_VMODE_NONINTERLACED,
.flag = 0,
+ }, {
+ /* 240x320 @ 60 Hz */
+ .name = "CMEL-OLED",
+ .refresh = 60,
+ .xres = 240,
+ .yres = 320,
+ .pixclock = 185925,
+ .left_margin = 9,
+ .right_margin = 16,
+ .upper_margin = 7,
+ .lower_margin = 9,
+ .hsync_len = 1,
+ .vsync_len = 1,
+ .sync = FB_SYNC_OE_ACT_HIGH | FB_SYNC_CLK_INVERT,
+ .vmode = FB_VMODE_NONINTERLACED,
+ .flag = 0,
},
};
@@ -479,6 +525,14 @@
mxc_iomux_setup_multiple_pins(pcm037_pins, ARRAY_SIZE(pcm037_pins),
"pcm037");
+ if (pcm037_variant() == PCM037_EET)
+ mxc_iomux_setup_multiple_pins(pcm037_uart1_pins,
+ ARRAY_SIZE(pcm037_uart1_pins), "pcm037_uart1");
+ else
+ mxc_iomux_setup_multiple_pins(pcm037_uart1_handshake_pins,
+ ARRAY_SIZE(pcm037_uart1_handshake_pins),
+ "pcm037_uart1");
+
platform_add_devices(devices, ARRAY_SIZE(devices));
mxc_register_device(&mxc_uart_device0, &uart_pdata);
@@ -542,4 +596,3 @@
.init_machine = mxc_board_init,
.timer = &pcm037_timer,
MACHINE_END
-