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https://github.com/brain-hackers/u-boot-brain
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6c343825dd
This patch implements a workaround to fix DDR3 memory issue. The code for workaround detects PGSR0 errors and then preps for and executes a software-controlled hard reset.In board_early_init, where logic has been added to identify whether or not the previous reset was a PORz. PLL initialization is skipped in the case of a software-controlled hard reset. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Keegan Garcia <kgarcia@ti.com> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
/*
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* DDR3
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*
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* (C) Copyright 2014
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* Texas Instruments Incorporated, <www.ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _DDR3_H_
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#define _DDR3_H_
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#include <asm/arch/hardware.h>
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struct ddr3_phy_config {
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unsigned int pllcr;
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unsigned int pgcr1_mask;
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unsigned int pgcr1_val;
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unsigned int ptr0;
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unsigned int ptr1;
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unsigned int ptr2;
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unsigned int ptr3;
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unsigned int ptr4;
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unsigned int dcr_mask;
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unsigned int dcr_val;
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unsigned int dtpr0;
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unsigned int dtpr1;
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unsigned int dtpr2;
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unsigned int mr0;
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unsigned int mr1;
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unsigned int mr2;
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unsigned int dtcr;
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unsigned int pgcr2;
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unsigned int zq0cr1;
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unsigned int zq1cr1;
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unsigned int zq2cr1;
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unsigned int pir_v1;
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unsigned int pir_v2;
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};
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struct ddr3_emif_config {
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unsigned int sdcfg;
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unsigned int sdtim1;
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unsigned int sdtim2;
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unsigned int sdtim3;
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unsigned int sdtim4;
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unsigned int zqcfg;
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unsigned int sdrfc;
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};
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void ddr3_init(void);
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void ddr3_reset_ddrphy(void);
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void ddr3_err_reset_workaround(void);
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void ddr3_init_ddrphy(u32 base, struct ddr3_phy_config *phy_cfg);
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void ddr3_init_ddremif(u32 base, struct ddr3_emif_config *emif_cfg);
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#endif
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