static void enable_videopll(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
s32 timeout = 100000;
setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
/* set video pll to 910MHz (24MHz * (37+11/12))
* video pll post div to 910/4 = 227.5MHz
*/
clrsetbits_le32(&ccm->analog_pll_video,
BM_ANADIG_PLL_VIDEO_DIV_SELECT |
BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT,
BF_ANADIG_PLL_VIDEO_DIV_SELECT(37) |
BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(0));
writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);
clrbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
while (timeout--)
if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
break;
if (timeout < 0)
printf("Warning: video pll lock timeout!\n");
clrsetbits_le32(&ccm->analog_pll_video,
BM_ANADIG_PLL_VIDEO_BYPASS,
BM_ANADIG_PLL_VIDEO_ENABLE);
}
static void setup_display(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
int reg;
s32 timeout = 100000;
enable_ipu_clock();
imx_setup_hdmi();
/* set video pll to 455MHz (24MHz * (37+11/12) / 2) */
reg = readl(&ccm->analog_pll_video);
reg |= BM_ANADIG_PLL_VIDEO_POWERDOWN;
writel(reg, &ccm->analog_pll_video);
reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37);
reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1);
writel(reg, &ccm->analog_pll_video);
writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);
reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
writel(reg, &ccm->analog_pll_video);
while (timeout--)
if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
break;
if (timeout < 0)
printf("Warning: video pll lock timeout!\n");
reg = readl(&ccm->analog_pll_video);
reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
writel(reg, &ccm->analog_pll_video);
/* gate ipu1_di0_clk */
reg = readl(&ccm->CCGR3);
reg &= ~MXC_CCM_CCGR3_LDB_DI0_MASK;
writel(reg, &ccm->CCGR3);
/* select video_pll clock / 7 for ipu1_di0_clk -> 65MHz pixclock */
reg = readl(&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 |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) |
(6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) |
(0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
writel(reg, &ccm->chsccdr);
/* enable ipu1_di0_clk */
reg = readl(&ccm->CCGR3);
reg |= MXC_CCM_CCGR3_LDB_DI0_MASK;
writel(reg, &ccm->CCGR3);
}
static void enable_spi_display(struct display_info_t const *dev)
{
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
int reg;
s32 timeout = 100000;
#if defined(CONFIG_VIDEO_BMP_LOGO)
rotate_logo(3); /* portrait display in landscape mode */
#endif
/*
* set ldb clock to 28341000 Hz calculated through the formula:
* (XRES + LEFT_M + RIGHT_M + HSYNC_LEN) *
* (YRES + UPPER_M + LOWER_M + VSYNC_LEN) * REFRESH)
* see:
* https://community.freescale.com/thread/308170
*/
ipu_set_ldb_clock(28341000);
reg = readl(&ccm->cs2cdr);
/* select pll 5 clock */
reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
| MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
writel(reg, &ccm->cs2cdr);
/* set PLL5 to 197994996Hz */
reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(0x21);
reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(0);
writel(reg, &ccm->analog_pll_video);
writel(BF_ANADIG_PLL_VIDEO_NUM_A(0xfbf4),
&ccm->analog_pll_video_num);
writel(BF_ANADIG_PLL_VIDEO_DENOM_B(0xf4240),
&ccm->analog_pll_video_denom);
reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
writel(reg, &ccm->analog_pll_video);
while (timeout--)
if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
break;
if (timeout < 0)
printf("Warning: video pll lock timeout!\n");
reg = readl(&ccm->analog_pll_video);
reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
writel(reg, &ccm->analog_pll_video);
/* set LDB0, LDB1 clk select to 000/000 (PLL5 clock) */
reg = readl(&ccm->cs2cdr);
reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
| MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
reg |= (0 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
| (0 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
writel(reg, &ccm->cs2cdr);
reg = readl(&ccm->cscmr2);
reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
writel(reg, &ccm->cscmr2);
reg = readl(&ccm->chsccdr);
reg |= (CHSCCDR_CLK_SEL_LDB_DI0
<< MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
reg &= ~MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK;
reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET);
reg &= ~MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK;
reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET);
writel(reg, &ccm->chsccdr);
reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
| IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
| IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_HIGH
| IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
| IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
| IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
| IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
writel(reg, &iomux->gpr[2]);
reg = readl(&iomux->gpr[3]);
reg = (reg & ~IOMUXC_GPR3_LVDS0_MUX_CTL_MASK)
| (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
<< IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
writel(reg, &iomux->gpr[3]);
imx_iomux_v3_setup_multiple_pads(
display_pads,
ARRAY_SIZE(display_pads));
return;
}
static void enable_lvds(struct display_info_t const *dev)
{
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
int reg;
s32 timeout = 100000;
/* set PLL5 clock */
reg = readl(&ccm->analog_pll_video);
reg |= BM_ANADIG_PLL_VIDEO_POWERDOWN;
writel(reg, &ccm->analog_pll_video);
/* set PLL5 to 232720000Hz */
reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(0x26);
reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(0);
writel(reg, &ccm->analog_pll_video);
writel(BF_ANADIG_PLL_VIDEO_NUM_A(0xC0238),
&ccm->analog_pll_video_num);
writel(BF_ANADIG_PLL_VIDEO_DENOM_B(0xF4240),
&ccm->analog_pll_video_denom);
reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
writel(reg, &ccm->analog_pll_video);
while (timeout--)
if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
break;
if (timeout < 0)
printf("Warning: video pll lock timeout!\n");
reg = readl(&ccm->analog_pll_video);
reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
writel(reg, &ccm->analog_pll_video);
/* set LDB0, LDB1 clk select to 000/000 (PLL5 clock) */
reg = readl(&ccm->cs2cdr);
reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
| MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
reg |= (0 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
| (0 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
writel(reg, &ccm->cs2cdr);
reg = readl(&ccm->cscmr2);
reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
writel(reg, &ccm->cscmr2);
reg = readl(&ccm->chsccdr);
reg |= (CHSCCDR_CLK_SEL_LDB_DI0
<< MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
writel(reg, &ccm->chsccdr);
reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
| IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
| IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_HIGH
| IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
| IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
| IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
| IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
writel(reg, &iomux->gpr[2]);
reg = readl(&iomux->gpr[3]);
reg = (reg & ~IOMUXC_GPR3_LVDS0_MUX_CTL_MASK)
| (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
<< IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
writel(reg, &iomux->gpr[3]);
return;
}
