1 /* 2 * Copyright 2017 Toradex AG 3 * 4 * FSL DCU platform driver 5 * SPDX-License-Identifier: GPL-2.0+ 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 DECLARE_GLOBAL_DATA_PTR; 15 16 unsigned int dcu_set_pixel_clock(unsigned int pixclock) 17 { 18 struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR; 19 unsigned long long div; 20 21 clrbits_le32(&ccm->cscmr1, CCM_CSCMR1_DCU0_CLK_SEL); 22 clrsetbits_le32(&ccm->cscdr3, 23 CCM_CSCDR3_DCU0_DIV_MASK | CCM_CSCDR3_DCU0_EN, 24 CCM_CSCDR3_DCU0_DIV(0) | CCM_CSCDR3_DCU0_EN); 25 div = (unsigned long long)(PLL1_PFD2_FREQ / 1000); 26 do_div(div, pixclock); 27 28 return div; 29 } 30 31 int platform_dcu_init(unsigned int xres, unsigned int yres, 32 const char *port, 33 struct fb_videomode *dcu_fb_videomode) 34 { 35 fsl_dcu_init(xres, yres, 32); 36 37 return 0; 38 } 39