diff options
Diffstat (limited to 'roms/u-boot/arch/powerpc/cpu/mpc512x/diu.c')
| -rw-r--r-- | roms/u-boot/arch/powerpc/cpu/mpc512x/diu.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/roms/u-boot/arch/powerpc/cpu/mpc512x/diu.c b/roms/u-boot/arch/powerpc/cpu/mpc512x/diu.c new file mode 100644 index 00000000..36e1f9cf --- /dev/null +++ b/roms/u-boot/arch/powerpc/cpu/mpc512x/diu.c @@ -0,0 +1,44 @@ +/* + * Copyright 2008 Freescale Semiconductor, Inc. + * York Sun <yorksun@freescale.com> + * + * FSL DIU Framebuffer driver + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <command.h> +#include <asm/io.h> + +#include <fsl_diu_fb.h> + +DECLARE_GLOBAL_DATA_PTR; + +void diu_set_pixel_clock(unsigned int pixclock) +{ + volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + volatile clk512x_t *clk = &immap->clk; + volatile unsigned int *clkdvdr = &clk->scfr[0]; + unsigned long speed_ccb, temp, pixval; + + speed_ccb = get_bus_freq(0) * 4; + 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", in_be32(clkdvdr)); + temp = in_be32(clkdvdr) & 0xFFFFFF00; + out_be32(clkdvdr, temp | (pixval & 0xFF)); + debug("DIU: Modified value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr)); +} + +int platform_diu_init(unsigned int xres, unsigned int yres, const char *port) +{ + unsigned int pixel_format = 0x88883316; + + debug("mpc5121_diu_init\n"); + return fsl_diu_init(xres, yres, pixel_format, 0); +} |