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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
124 lines
2.4 KiB
C
124 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Atmel Corporation
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* Wenyou Yang <wenyou.yang@atmel.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <wdt.h>
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#include <asm/io.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/at91_pmc.h>
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#include <asm/arch/at91_wdt.h>
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#define EN_UPLL_TIMEOUT 500
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void at91_periph_clk_enable(int id)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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#ifdef CPU_HAS_PCR
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u32 regval;
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u32 div_value;
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if (id > AT91_PMC_PCR_PID_MASK)
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return;
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writel(id, &pmc->pcr);
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div_value = readl(&pmc->pcr) & AT91_PMC_PCR_DIV;
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regval = AT91_PMC_PCR_EN | AT91_PMC_PCR_CMD_WRITE | id | div_value;
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writel(regval, &pmc->pcr);
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#else
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writel(0x01 << id, &pmc->pcer);
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#endif
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}
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void at91_periph_clk_disable(int id)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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#ifdef CPU_HAS_PCR
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u32 regval;
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if (id > AT91_PMC_PCR_PID_MASK)
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return;
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regval = AT91_PMC_PCR_CMD_WRITE | id;
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writel(regval, &pmc->pcr);
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#else
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writel(0x01 << id, &pmc->pcdr);
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#endif
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}
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void at91_system_clk_enable(int sys_clk)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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writel(sys_clk, &pmc->scer);
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}
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void at91_system_clk_disable(int sys_clk)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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writel(sys_clk, &pmc->scdr);
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}
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int at91_upll_clk_enable(void)
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{
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struct at91_pmc *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
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ulong start_time, tmp_time;
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if ((readl(&pmc->uckr) & AT91_PMC_UPLLEN) == AT91_PMC_UPLLEN)
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return 0;
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start_time = get_timer(0);
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writel(AT91_PMC_UPLLEN | AT91_PMC_BIASEN, &pmc->uckr);
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while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU) {
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tmp_time = get_timer(0);
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if ((tmp_time - start_time) > EN_UPLL_TIMEOUT) {
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printf("ERROR: failed to enable UPLL\n");
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return -1;
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}
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}
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return 0;
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}
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int at91_upll_clk_disable(void)
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{
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struct at91_pmc *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
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ulong start_time, tmp_time;
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start_time = get_timer(0);
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writel(readl(&pmc->uckr) & ~AT91_PMC_UPLLEN, &pmc->uckr);
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while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU) {
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tmp_time = get_timer(0);
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if ((tmp_time - start_time) > EN_UPLL_TIMEOUT) {
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printf("ERROR: failed to stop UPLL\n");
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return -1;
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}
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}
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return 0;
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}
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void at91_usb_clk_init(u32 value)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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writel(value, &pmc->usb);
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}
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void at91_pllicpr_init(u32 icpr)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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writel(icpr, &pmc->pllicpr);
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}
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