ARM: add an "eet" variant of the imx31_phycore board

The "eet" variant of the imx31_phycore board has an OLED display, using a
s6e63d6 display controller on the first SPI interface, using GPIO57 as a
chip-select for it. With this configuration you can display 256 colour BMP
images in 16-bit RGB (RGB565) LCD mode.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/board/imx31_phycore/imx31_phycore.c b/board/imx31_phycore/imx31_phycore.c
index ae93444a16..93a5c40d77 100644
--- a/board/imx31_phycore/imx31_phycore.c
+++ b/board/imx31_phycore/imx31_phycore.c
@@ -23,6 +23,7 @@
 
 
 #include <common.h>
+#include <s6e63d6.h>
 #include <asm/arch/mx31.h>
 #include <asm/arch/mx31-regs.h>
 
@@ -66,6 +67,62 @@ int board_init (void)
 	return 0;
 }
 
+#ifdef BOARD_LATE_INIT
+int board_late_init(void)
+{
+#ifdef CONFIG_S6E63D6
+	struct s6e63d6 data = {
+		/*
+		 * See comment in mxc_spi.c::decode_cs() for .cs field format.
+		 * We use GPIO 57 as a chipselect for the S6E63D6 and chipselect
+		 * 2 of the SPI controller #1, since it is unused.
+		 */
+		.cs = 2 | (57 << 8),
+		.bus = 0,
+		.id = 0,
+	};
+	int ret;
+
+	/* SPI1 */
+	mx31_gpio_mux(MUX_CSPI1_SCLK__CSPI1_CLK);
+	mx31_gpio_mux(MUX_CSPI1_SPI_RDY__CSPI1_DATAREADY_B);
+	mx31_gpio_mux(MUX_CSPI1_MOSI__CSPI1_MOSI);
+	mx31_gpio_mux(MUX_CSPI1_MISO__CSPI1_MISO);
+	mx31_gpio_mux(MUX_CSPI1_SS0__CSPI1_SS0_B);
+	mx31_gpio_mux(MUX_CSPI1_SS1__CSPI1_SS1_B);
+	mx31_gpio_mux(MUX_CSPI1_SS2__CSPI1_SS2_B);
+
+	/* start SPI1 clock */
+	__REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 2);
+
+	/* GPIO 57 */
+	/* sw_mux_ctl_key_col4_key_col5_key_col6_key_col7 */
+	mx31_gpio_mux(IOMUX_MODE(0x63, MUX_CTL_GPIO));
+
+	/* SPI1 CS2 is free */
+	ret = s6e63d6_init(&data);
+	if (ret)
+		return ret;
+
+	/*
+	 * This is a "magic" sequence to initialise a C0240QGLA / C0283QGLC
+	 * OLED display connected to a S6E63D6 SPI display controller in the
+	 * 18 bit RGB mode
+	 */
+	s6e63d6_index(&data, 2);
+	s6e63d6_param(&data, 0x0182);
+	s6e63d6_index(&data, 3);
+	s6e63d6_param(&data, 0x8130);
+	s6e63d6_index(&data, 0x10);
+	s6e63d6_param(&data, 0x0000);
+	s6e63d6_index(&data, 5);
+	s6e63d6_param(&data, 0x0001);
+	s6e63d6_index(&data, 0x22);
+#endif
+	return 0;
+}
+#endif
+
 int checkboard (void)
 {
 	printf("Board: Phytec phyCore i.MX31\n");