1 /* 2 * (C) Copyright 2009 Faraday Technology 3 * Po-Yu Chuang <ratbert@faraday-tech.com> 4 * 5 * Copyright (C) 2010 Andes Technology Corporation 6 * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> 7 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> 8 * 9 * SPDX-License-Identifier: GPL-2.0+ 10 */ 11 12 #include <common.h> 13 #include <asm/io.h> 14 #include <faraday/ftpmu010.h> 15 16 /* OSCC: OSC Control Register */ 17 void ftpmu010_32768osc_enable(void) 18 { 19 static struct ftpmu010 *pmu = (struct ftpmu010 *)CONFIG_FTPMU010_BASE; 20 unsigned int oscc; 21 22 /* enable the 32768Hz oscillator */ 23 oscc = readl(&pmu->OSCC); 24 oscc &= ~(FTPMU010_OSCC_OSCL_OFF | FTPMU010_OSCC_OSCL_TRI); 25 writel(oscc, &pmu->OSCC); 26 27 /* wait until ready */ 28 while (!(readl(&pmu->OSCC) & FTPMU010_OSCC_OSCL_STABLE)) 29 ; 30 31 /* select 32768Hz oscillator */ 32 oscc = readl(&pmu->OSCC); 33 oscc |= FTPMU010_OSCC_OSCL_RTCLSEL; 34 writel(oscc, &pmu->OSCC); 35 } 36 37 /* MFPSR: Multi-Function Port Setting Register */ 38 void ftpmu010_mfpsr_select_dev(unsigned int dev) 39 { 40 static struct ftpmu010 *pmu = (struct ftpmu010 *)CONFIG_FTPMU010_BASE; 41 unsigned int mfpsr; 42 43 mfpsr = readl(&pmu->MFPSR); 44 mfpsr |= dev; 45 writel(mfpsr, &pmu->MFPSR); 46 } 47 48 void ftpmu010_mfpsr_diselect_dev(unsigned int dev) 49 { 50 static struct ftpmu010 *pmu = (struct ftpmu010 *)CONFIG_FTPMU010_BASE; 51 unsigned int mfpsr; 52 53 mfpsr = readl(&pmu->MFPSR); 54 mfpsr &= ~dev; 55 writel(mfpsr, &pmu->MFPSR); 56 } 57 58 /* PDLLCR0: PLL/DLL Control Register 0 */ 59 void ftpmu010_dlldis_disable(void) 60 { 61 static struct ftpmu010 *pmu = (struct ftpmu010 *)CONFIG_FTPMU010_BASE; 62 unsigned int pdllcr0; 63 64 pdllcr0 = readl(&pmu->PDLLCR0); 65 pdllcr0 |= FTPMU010_PDLLCR0_DLLDIS; 66 writel(pdllcr0, &pmu->PDLLCR0); 67 } 68 69 void ftpmu010_sdram_clk_disable(unsigned int cr0) 70 { 71 static struct ftpmu010 *pmu = (struct ftpmu010 *)CONFIG_FTPMU010_BASE; 72 unsigned int pdllcr0; 73 74 pdllcr0 = readl(&pmu->PDLLCR0); 75 pdllcr0 |= FTPMU010_PDLLCR0_HCLKOUTDIS(cr0); 76 writel(pdllcr0, &pmu->PDLLCR0); 77 } 78 79 /* SDRAMHTC: SDRAM Signal Hold Time Control */ 80 void ftpmu010_sdramhtc_set(unsigned int val) 81 { 82 static struct ftpmu010 *pmu = (struct ftpmu010 *)CONFIG_FTPMU010_BASE; 83 unsigned int sdramhtc; 84 85 sdramhtc = readl(&pmu->SDRAMHTC); 86 sdramhtc |= val; 87 writel(sdramhtc, &pmu->SDRAMHTC); 88 } 89