2 * Copyright 2008 Freescale Semiconductor, Inc.
3 * York Sun <yorksun@freescale.com>
5 * FSL DIU Framebuffer driver
7 * SPDX-License-Identifier: GPL-2.0+
14 #include <fsl_diu_fb.h>
16 DECLARE_GLOBAL_DATA_PTR;
18 void diu_set_pixel_clock(unsigned int pixclock)
20 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
21 volatile clk512x_t *clk = &immap->clk;
22 volatile unsigned int *clkdvdr = &clk->scfr[0];
23 unsigned long speed_ccb, temp, pixval;
25 speed_ccb = get_bus_freq(0) * 4;
26 temp = 1000000000/pixclock;
28 pixval = speed_ccb / temp;
29 debug("DIU pixval = %lu\n", pixval);
31 /* Modify PXCLK in GUTS CLKDVDR */
32 debug("DIU: Current value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
33 temp = in_be32(clkdvdr) & 0xFFFFFF00;
34 out_be32(clkdvdr, temp | (pixval & 0xFF));
35 debug("DIU: Modified value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
38 int platform_diu_init(unsigned int xres, unsigned int yres, const char *port)
40 unsigned int pixel_format = 0x88883316;
42 debug("mpc5121_diu_init\n");
43 return fsl_diu_init(xres, yres, pixel_format, 0);