1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2017 Toradex AG 4 * 5 * FSL DCU platform driver 6 */ 7 8 #include <asm/arch/crm_regs.h> 9 #include <asm/io.h> 10 #include <common.h> 11 #include <fsl_dcu_fb.h> 12 #include "div64.h" 13 14 unsigned int dcu_set_pixel_clock(unsigned int pixclock) 15 { 16 struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR; 17 unsigned long long div; 18 19 clrbits_le32(&ccm->cscmr1, CCM_CSCMR1_DCU0_CLK_SEL); 20 clrsetbits_le32(&ccm->cscdr3, 21 CCM_CSCDR3_DCU0_DIV_MASK | CCM_CSCDR3_DCU0_EN, 22 CCM_CSCDR3_DCU0_DIV(0) | CCM_CSCDR3_DCU0_EN); 23 div = (unsigned long long)(PLL1_PFD2_FREQ / 1000); 24 do_div(div, pixclock); 25 26 return div; 27 } 28 29 int platform_dcu_init(unsigned int xres, unsigned int yres, 30 const char *port, 31 struct fb_videomode *dcu_fb_videomode) 32 { 33 fsl_dcu_init(xres, yres, 32); 34 35 return 0; 36 } 37