diff options
| author | Ian Ray <ian.ray@ge.com> | 2018-10-15 09:59:44 +0200 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2018-10-22 14:32:07 +0200 |
| commit | d9ea0d77a8ff2d0522313aa1bb65ee955e252c93 (patch) | |
| tree | 5794ea461b0c07477a6409dbb8d259627808b87e /board/ge | |
| parent | 6ee7bb528eacbba9629e44b8123becb9076b9308 (diff) | |
board: ge: bx50v3: correct LDB clock
Use Video PLL to provide 65MHz for all displays.
Signed-off-by: Ian Ray <ian.ray@ge.com>
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
Diffstat (limited to 'board/ge')
| -rw-r--r-- | board/ge/bx50v3/bx50v3.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/board/ge/bx50v3/bx50v3.c b/board/ge/bx50v3/bx50v3.c index b2d065c1b8..f07141b1c3 100644 --- a/board/ge/bx50v3/bx50v3.c +++ b/board/ge/bx50v3/bx50v3.c @@ -426,14 +426,22 @@ static void enable_videopll(void) 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 - */ + /* PLL_VIDEO 455MHz (24MHz * (37+11/12) / 2) + * | + * PLL5 + * | + * CS2CDR[LDB_DI0_CLK_SEL] + * | + * +----> LDB_DI0_SERIAL_CLK_ROOT + * | + * +--> CSCMR2[LDB_DI0_IPU_DIV] --> LDB_DI0_IPU 455 / 7 = 65 MHz + */ + 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)); + BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1)); 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); @@ -459,8 +467,8 @@ static void setup_display_b850v3(void) enable_videopll(); - /* IPU1 D0 clock is 227.5 / 3.5 = 65MHz */ - clrbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV); + /* IPU1 DI0 clock is 455MHz / 7 = 65MHz */ + setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV); imx_setup_hdmi(); @@ -507,7 +515,7 @@ static void setup_display_bx50v3(void) */ mdelay(200); - /* IPU1 DI0 clock is 480/7 = 68.5 MHz */ + /* IPU1 DI0 clock is 455MHz / 7 = 65MHz */ setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV); /* Set LDB_DI0 as clock source for IPU_DI0 */ @@ -683,12 +691,8 @@ int board_early_init_f(void) setup_iomux_uart(); #if defined(CONFIG_VIDEO_IPUV3) - if (is_b850v3()) - /* Set LDB clock to Video PLL */ - select_ldb_di_clock_source(MXC_PLL5_CLK); - else - /* Set LDB clock to USB PLL */ - select_ldb_di_clock_source(MXC_PLL3_SW_CLK); + /* Set LDB clock to Video PLL */ + select_ldb_di_clock_source(MXC_PLL5_CLK); #endif return 0; } |