diff options
Diffstat (limited to 'arch/arm/cpu/armv7/uniphier/ddrphy_training.c')
-rw-r--r-- | arch/arm/cpu/armv7/uniphier/ddrphy_training.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/arch/arm/cpu/armv7/uniphier/ddrphy_training.c b/arch/arm/cpu/armv7/uniphier/ddrphy_training.c deleted file mode 100644 index cc8b8ad..0000000 --- a/arch/arm/cpu/armv7/uniphier/ddrphy_training.c +++ /dev/null @@ -1,144 +0,0 @@ -/* - * Copyright (C) 2011-2014 Panasonic Corporation - * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/io.h> -#include <asm/arch/ddrphy-regs.h> - -void ddrphy_prepare_training(struct ddrphy __iomem *phy, int rank) -{ - int dx; - u32 __iomem tmp, *p; - - for (dx = 0; dx < NR_DATX8_PER_DDRPHY; dx++) { - p = &phy->dx[dx].gcr; - - tmp = readl(p); - /* Specify the rank that should be write leveled */ - tmp &= ~DXGCR_WLRKEN_MASK; - tmp |= (1 << (DXGCR_WLRKEN_SHIFT + rank)) & DXGCR_WLRKEN_MASK; - writel(tmp, p); - } - - p = &phy->dtcr; - - tmp = readl(p); - /* Specify the rank used during data bit deskew and eye centering */ - tmp &= ~DTCR_DTRANK_MASK; - tmp |= (rank << DTCR_DTRANK_SHIFT) & DTCR_DTRANK_MASK; - /* Use Multi-Purpose Register for DQS gate training */ - tmp |= DTCR_DTMPR; - /* Specify the rank enabled for data-training */ - tmp &= ~DTCR_RNKEN_MASK; - tmp |= (1 << (DTCR_RNKEN_SHIFT + rank)) & DTCR_RNKEN_MASK; - writel(tmp, p); -} - -struct ddrphy_init_sequence { - char *description; - u32 init_flag; - u32 done_flag; - u32 err_flag; -}; - -static struct ddrphy_init_sequence init_sequence[] = { - { - "DRAM Initialization", - PIR_DRAMRST | PIR_DRAMINIT, - PGSR0_DIDONE, - PGSR0_DIERR - }, - { - "Write Leveling", - PIR_WL, - PGSR0_WLDONE, - PGSR0_WLERR - }, - { - "Read DQS Gate Training", - PIR_QSGATE, - PGSR0_QSGDONE, - PGSR0_QSGERR - }, - { - "Write Leveling Adjustment", - PIR_WLADJ, - PGSR0_WLADONE, - PGSR0_WLAERR - }, - { - "Read Bit Deskew", - PIR_RDDSKW, - PGSR0_RDDONE, - PGSR0_RDERR - }, - { - "Write Bit Deskew", - PIR_WRDSKW, - PGSR0_WDDONE, - PGSR0_WDERR - }, - { - "Read Eye Training", - PIR_RDEYE, - PGSR0_REDONE, - PGSR0_REERR - }, - { - "Write Eye Training", - PIR_WREYE, - PGSR0_WEDONE, - PGSR0_WEERR - } -}; - -int ddrphy_training(struct ddrphy __iomem *phy) -{ - int i; - u32 pgsr0; - u32 init_flag = PIR_INIT; - u32 done_flag = PGSR0_IDONE; - int timeout = 50000; /* 50 msec is long enough */ -#ifdef DISPLAY_ELAPSED_TIME - ulong start = get_timer(0); -#endif - - for (i = 0; i < ARRAY_SIZE(init_sequence); i++) { - init_flag |= init_sequence[i].init_flag; - done_flag |= init_sequence[i].done_flag; - } - - writel(init_flag, &phy->pir); - - do { - if (--timeout < 0) { -#ifndef CONFIG_SPL_BUILD - printf("%s: error: timeout during DDR training\n", - __func__); -#endif - return -1; - } - udelay(1); - pgsr0 = readl(&phy->pgsr[0]); - } while ((pgsr0 & done_flag) != done_flag); - - for (i = 0; i < ARRAY_SIZE(init_sequence); i++) { - if (pgsr0 & init_sequence[i].err_flag) { -#ifndef CONFIG_SPL_BUILD - printf("%s: error: %s failed\n", __func__, - init_sequence[i].description); -#endif - return -1; - } - } - -#ifdef DISPLAY_ELAPSED_TIME - printf("%s: info: elapsed time %ld msec\n", get_timer(start)); -#endif - - return 0; -} |