1 files changed, 60 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc512x/diu.c b/arch/powerpc/cpu/mpc512x/diu.c
new file mode 100644
index 0000000..b7db249
--- /dev/null
+++ b/arch/powerpc/cpu/mpc512x/diu.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ * York Sun <yorksun@freescale.com>
+ *
+ * FSL DIU Framebuffer driver
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#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);
+}