mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-09 20:56:16 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
114 lines
3.1 KiB
C
114 lines
3.1 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 - http://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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#ifdef CONFIG_TI814X
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void config_dmm(const struct dmm_lisa_map_regs *regs)
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{
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struct dmm_lisa_map_regs *hw_lisa_map_regs =
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(struct dmm_lisa_map_regs *)DMM_BASE;
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enable_dmm_clocks();
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writel(0, &hw_lisa_map_regs->dmm_lisa_map_3);
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writel(0, &hw_lisa_map_regs->dmm_lisa_map_2);
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writel(0, &hw_lisa_map_regs->dmm_lisa_map_1);
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writel(0, &hw_lisa_map_regs->dmm_lisa_map_0);
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writel(regs->dmm_lisa_map_3, &hw_lisa_map_regs->dmm_lisa_map_3);
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writel(regs->dmm_lisa_map_2, &hw_lisa_map_regs->dmm_lisa_map_2);
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writel(regs->dmm_lisa_map_1, &hw_lisa_map_regs->dmm_lisa_map_1);
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writel(regs->dmm_lisa_map_0, &hw_lisa_map_regs->dmm_lisa_map_0);
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}
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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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