diff options
Diffstat (limited to 'board/freescale/mpc8610hpcd')
| -rw-r--r-- | board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c b/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c index b70637f..4db941c 100644 --- a/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c +++ b/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c @@ -41,6 +41,26 @@ extern unsigned int FSL_Logo_BMP[]; static int xres, yres; +void diu_set_pixel_clock(unsigned int pixclock) +{ + volatile immap_t *immap = (immap_t *)CFG_IMMR; + volatile ccsr_gur_t *gur = &immap->im_gur; + volatile unsigned int *guts_clkdvdr = &gur->clkdvdr; + unsigned long speed_ccb, temp, pixval; + + speed_ccb = get_bus_freq(0); + temp = 1000000000/pixclock; + temp *= 1000; + pixval = speed_ccb / temp; + debug("DIU pixval = %lu\n", pixval); + + /* Modify PXCLK in GUTS CLKDVDR */ + debug("DIU: Current value of CLKDVDR = 0x%08x\n", *guts_clkdvdr); + temp = *guts_clkdvdr & 0x2000FFFF; + *guts_clkdvdr = temp; /* turn off clock */ + *guts_clkdvdr = temp | 0x80000000 | ((pixval & 0x1F) << 16); + debug("DIU: Modified value of CLKDVDR = 0x%08x\n", *guts_clkdvdr); +} void mpc8610hpcd_diu_init(void) { |