[U-Boot] [PATCH V3 1/1] i.MX6: mx6qsabrelite: Add splash screen support

Eric Nelson
2012-09-19T18:46:48Z

Adds support for the Hannstar 1024 x 768 LVDS panel (Freescale part
number MCIMX-LVDS1) to SABRE-Lite board.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
---
board/freescale/mx6qsabrelite/mx6qsabrelite.c | 102 +++++++++++++++++++++++++
include/configs/mx6qsabrelite.h | 15 ++++-
2 files changed, 116 insertions(+), 1 deletions(-)

diff --git a/board/freescale/mx6qsabrelite/mx6qsabrelite.c b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
index 4b4e89b..c42a6ab 100644
--- a/board/freescale/mx6qsabrelite/mx6qsabrelite.c
+++ b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
@@ -36,6 +36,9 @@
#include <micrel.h>
#include <miiphy.h>
#include <netdev.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+#include <asm/arch/crm_regs.h>
DECLARE_GLOBAL_DATA_PTR;

#define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
@@ -195,6 +198,10 @@ static iomux_v3_cfg_t button_pads[] = {
MX6Q_PAD_GPIO_18__GPIO_7_13 | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
};

+iomux_v3_cfg_t lcd_gpio[] = {
+ MX6Q_PAD_SD1_CMD__GPIO_1_18 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
static void setup_iomux_enet(void)
{
gpio_direction_output(IMX_GPIO_NR(3, 23), 0);
@@ -372,14 +379,106 @@ int setup_sata(void)
}
#endif

+static struct fb_videomode lvds_xga = {
+ .name = "Hannstar-XGA",
+ .refresh = 60,
+ .xres = 1024,
+ .yres = 768,
+ .pixclock = 15385,
+ .left_margin = 220,
+ .right_margin = 40,
+ .upper_margin = 21,
+ .lower_margin = 7,
+ .hsync_len = 60,
+ .vsync_len = 10,
+ .sync = FB_SYNC_EXT,
+ .vmode = FB_VMODE_NONINTERLACED
+};
+
+void lcd_iomux(void)
+{
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+ int reg;
+
+ /* Turn on GPIO backlight */
+ imx_iomux_v3_setup_multiple_pads(lcd_gpio, ARRAY_SIZE(lcd_gpio));
+ gpio_direction_output(18, 1);
+
+ /* Turn on LDB0,IPU,IPU DI0 clocks */
+ reg = __raw_readl(&mxc_ccm->CCGR3);
+ reg |= MXC_CCM_CCGR3_IPU1_IPU_MASK
+ |MXC_CCM_CCGR3_IPU1_IPU_DI0_MASK
+ |MXC_CCM_CCGR3_LDB_DI0_MASK;
+ writel(reg, &mxc_ccm->CCGR3);
+
+ /* set PFD1_FRAC to 0x13 == 455 MHz (480*18)/0x13 */
+ writel(ANATOP_PFD_480_PFD1_FRAC_MASK, &anatop->pfd_480_clr);
+ writel(0x13<<ANATOP_PFD_480_PFD1_FRAC_SHIFT, &anatop->pfd_480_set);
+
+ /* set LDB0, LDB1 clk select to 011/011 */
+ reg = readl(&mxc_ccm->cs2cdr);
+ reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
+ |MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
+ reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
+ |(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
+ writel(reg, &mxc_ccm->cs2cdr);
+
+ reg = readl(&mxc_ccm->cscmr2);
+ reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
+ writel(reg, &mxc_ccm->cscmr2);
+
+ reg = readl(&mxc_ccm->chsccdr);
+ reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK
+ |MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK
+ |MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
+ reg |= (CHSCCDR_CLK_SEL_LDB_DI0
+ <<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET)
+ |(CHSCCDR_PODF_DIVIDE_BY_3
+ <<MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET)
+ |(CHSCCDR_IPU_PRE_CLK_540M_PFD
+ <<MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET);
+ writel(reg, &mxc_ccm->chsccdr);
+
+ reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
+ |IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
+ |IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
+ |IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
+ |IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
+ |IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
+ |IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
+ |IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
+ |IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
+ writel(0x201, &iomux->gpr[2]);
+}
+
+void lcd_enable(void)
+{
+ int ret = ipuv3_fb_init(&lvds_xga, 0, IPU_PIX_FMT_RGB666);
+ if (ret)
+ printf("LCD %s cannot be configured: %d\n", lvds_xga.name, ret);
+}
+
int board_early_init_f(void)
{
setup_iomux_uart();
setup_buttons();
+ lcd_iomux();

return 0;
}

+/*
+ * Do not overwrite the console
+ * Use always serial for U-Boot console
+ */
+int overwrite_console(void)
+{
+ return 1;
+}
+
int board_init(void)
{
/* address of boot parameters */
@@ -396,6 +495,9 @@ int board_init(void)
setup_sata();
#endif

+#ifdef CONFIG_VIDEO
+ lcd_enable();
+#endif
return 0;
}

diff --git a/include/configs/mx6qsabrelite.h b/include/configs/mx6qsabrelite.h
index 72d0154..d0c3e0a 100644
--- a/include/configs/mx6qsabrelite.h
+++ b/include/configs/mx6qsabrelite.h
@@ -39,7 +39,7 @@
#define CONFIG_REVISION_TAG

/* Size of malloc() pool */
-#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + 2 * 1024 * 1024)
+#define CONFIG_SYS_MALLOC_LEN (10 * 1024 * 1024)

#define CONFIG_BOARD_EARLY_INIT_F
#define CONFIG_MISC_INIT_R
@@ -121,6 +121,19 @@
/* Miscellaneous commands */
#define CONFIG_CMD_BMODE

+/* Framebuffer and LCD */
+#define CONFIG_VIDEO
+#define CONFIG_VIDEO_IPUV3
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
+#define CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
+#define CONFIG_VIDEO_BMP_RLE8
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_BMP_16BPP
+#define CONFIG_VIDEO_LOGO
+#define CONFIG_IPUV3_CLK 260000000
+
/* allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE
#define CONFIG_CONS_INDEX 1
--
1.7.9