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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>
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* emif4.c
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*
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* AM33XX emif4 configuration file
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*
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* Copyright (C) 2011, Texas Instruments, Incorporated - https://www.ti.com/
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*/
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#include <common.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/ddr_defs.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/io.h>
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#include <asm/emif.h>
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static struct vtp_reg *vtpreg[2] = {
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(struct vtp_reg *)VTP0_CTRL_ADDR,
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(struct vtp_reg *)VTP1_CTRL_ADDR};
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#ifdef CONFIG_AM33XX
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static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR;
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#endif
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#ifdef CONFIG_AM43XX
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static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR;
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static struct cm_device_inst *cm_device =
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(struct cm_device_inst *)CM_DEVICE_INST;
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#endif
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static void config_vtp(int nr)
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{
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writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_ENABLE,
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&vtpreg[nr]->vtp0ctrlreg);
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writel(readl(&vtpreg[nr]->vtp0ctrlreg) & (~VTP_CTRL_START_EN),
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&vtpreg[nr]->vtp0ctrlreg);
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writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_START_EN,
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&vtpreg[nr]->vtp0ctrlreg);
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/* Poll for READY */
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while ((readl(&vtpreg[nr]->vtp0ctrlreg) & VTP_CTRL_READY) !=
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VTP_CTRL_READY)
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;
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}
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void __weak ddr_pll_config(unsigned int ddrpll_m)
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{
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}
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void config_ddr(unsigned int pll, const struct ctrl_ioregs *ioregs,
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const struct ddr_data *data, const struct cmd_control *ctrl,
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const struct emif_regs *regs, int nr)
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{
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ddr_pll_config(pll);
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config_vtp(nr);
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config_cmd_ctrl(ctrl, nr);
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config_ddr_data(data, nr);
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#ifdef CONFIG_AM33XX
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config_io_ctrl(ioregs);
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/* Set CKE to be controlled by EMIF/DDR PHY */
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writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl);
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#endif
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#ifdef CONFIG_AM43XX
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writel(readl(&cm_device->cm_dll_ctrl) & ~0x1, &cm_device->cm_dll_ctrl);
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while ((readl(&cm_device->cm_dll_ctrl) & CM_DLL_READYST) == 0)
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;
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config_io_ctrl(ioregs);
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/* Set CKE to be controlled by EMIF/DDR PHY */
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writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl);
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if (emif_sdram_type(regs->sdram_config) == EMIF_SDRAM_TYPE_DDR3)
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#ifndef CONFIG_SPL_RTC_DDR_SUPPORT
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/* Allow EMIF to control DDR_RESET */
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writel(0x00000000, &ddrctrl->ddrioctrl);
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#else
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/* Override EMIF DDR_RESET control */
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writel(0x80000000, &ddrctrl->ddrioctrl);
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#endif /* CONFIG_SPL_RTC_DDR_SUPPORT */
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#endif
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/* Program EMIF instance */
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config_ddr_phy(regs, nr);
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set_sdram_timings(regs, nr);
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if (get_emif_rev(EMIF1_BASE) == EMIF_4D5)
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config_sdram_emif4d5(regs, nr);
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else
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config_sdram(regs, nr);
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}
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