1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015-2017 Socionext Inc.
10 #include <linux/printk.h>
11 #include <linux/sizes.h>
13 #include "../soc-info.h"
14 #include "ddrmphy-regs.h"
16 /* Select either decimal or hexadecimal */
18 #define PRINTF_FORMAT "%2d"
20 #define PRINTF_FORMAT "%02x"
25 #define ptr_to_uint(p) ((unsigned int)(unsigned long)(p))
27 #define UNIPHIER_MAX_NR_DDRMPHY 3
29 struct uniphier_ddrmphy_param {
36 } phy[UNIPHIER_MAX_NR_DDRMPHY];
39 static const struct uniphier_ddrmphy_param uniphier_ddrmphy_param[] = {
41 .soc_id = UNIPHIER_PXS2_ID,
44 { .base = 0x5b830000, .nr_zq = 3, .nr_dx = 4, },
45 { .base = 0x5ba30000, .nr_zq = 3, .nr_dx = 4, },
46 { .base = 0x5bc30000, .nr_zq = 2, .nr_dx = 2, },
50 .soc_id = UNIPHIER_LD6B_ID,
53 { .base = 0x5b830000, .nr_zq = 3, .nr_dx = 4, },
54 { .base = 0x5ba30000, .nr_zq = 3, .nr_dx = 4, },
55 { .base = 0x5bc30000, .nr_zq = 2, .nr_dx = 2, },
59 UNIPHIER_DEFINE_SOCDATA_FUNC(uniphier_get_ddrmphy_param, uniphier_ddrmphy_param)
61 static void print_bdl(void __iomem *reg, int n)
66 for (i = 0; i < n; i++)
67 printf(FS PRINTF_FORMAT, (val >> i * 8) & 0x1f);
70 static void dump_loop(const struct uniphier_ddrmphy_param *param,
71 void (*callback)(void __iomem *))
73 void __iomem *phy_base, *dx_base;
76 for (phy = 0; phy < param->nr_phy; phy++) {
77 phy_base = ioremap(param->phy[phy].base, SZ_4K);
78 dx_base = phy_base + MPHY_DX_BASE;
80 for (dx = 0; dx < param->phy[phy].nr_dx; dx++) {
81 printf("PHY%dDX%d:", phy, dx);
83 dx_base += MPHY_DX_STRIDE;
91 static void zq_dump(const struct uniphier_ddrmphy_param *param)
93 void __iomem *phy_base, *zq_base;
97 printf("\n--- Impedance Data ---\n");
98 printf(" ZPD ZPU OPD OPU ZDV ODV\n");
100 for (phy = 0; phy < param->nr_phy; phy++) {
101 phy_base = ioremap(param->phy[phy].base, SZ_4K);
102 zq_base = phy_base + MPHY_ZQ_BASE;
104 for (zq = 0; zq < param->phy[phy].nr_zq; zq++) {
105 printf("PHY%dZQ%d:", phy, zq);
107 val = readl(zq_base + MPHY_ZQ_DR);
108 for (i = 0; i < 4; i++) {
109 printf(FS PRINTF_FORMAT, val & 0x7f);
113 val = readl(zq_base + MPHY_ZQ_PR);
114 for (i = 0; i < 2; i++) {
115 printf(FS PRINTF_FORMAT, val & 0xf);
119 zq_base += MPHY_ZQ_STRIDE;
127 static void __wbdl_dump(void __iomem *dx_base)
129 print_bdl(dx_base + MPHY_DX_BDLR0, 4);
130 print_bdl(dx_base + MPHY_DX_BDLR1, 4);
131 print_bdl(dx_base + MPHY_DX_BDLR2, 2);
133 printf(FS "(+" PRINTF_FORMAT ")",
134 readl(dx_base + MPHY_DX_LCDLR1) & 0xff);
137 static void wbdl_dump(const struct uniphier_ddrmphy_param *param)
139 printf("\n--- Write Bit Delay Line ---\n");
140 printf(" DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DM DQS (WDQD)\n");
142 dump_loop(param, &__wbdl_dump);
145 static void __rbdl_dump(void __iomem *dx_base)
147 print_bdl(dx_base + MPHY_DX_BDLR3, 4);
148 print_bdl(dx_base + MPHY_DX_BDLR4, 4);
149 print_bdl(dx_base + MPHY_DX_BDLR5, 1);
151 printf(FS "(+" PRINTF_FORMAT ")",
152 (readl(dx_base + MPHY_DX_LCDLR1) >> 8) & 0xff);
154 printf(FS "(+" PRINTF_FORMAT ")",
155 (readl(dx_base + MPHY_DX_LCDLR1) >> 16) & 0xff);
158 static void rbdl_dump(const struct uniphier_ddrmphy_param *param)
160 printf("\n--- Read Bit Delay Line ---\n");
161 printf(" DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DM (RDQSD) (RDQSND)\n");
163 dump_loop(param, &__rbdl_dump);
166 static void __wld_dump(void __iomem *dx_base)
169 u32 lcdlr0 = readl(dx_base + MPHY_DX_LCDLR0);
170 u32 gtr = readl(dx_base + MPHY_DX_GTR);
172 for (rank = 0; rank < 4; rank++) {
173 u32 wld = (lcdlr0 >> (8 * rank)) & 0xff; /* Delay */
174 u32 wlsl = (gtr >> (12 + 2 * rank)) & 0x3; /* System Latency */
176 printf(FS PRINTF_FORMAT "%sT", wld,
177 wlsl == 0 ? "-1" : wlsl == 1 ? "+0" : "+1");
181 static void wld_dump(const struct uniphier_ddrmphy_param *param)
183 printf("\n--- Write Leveling Delay ---\n");
184 printf(" Rank0 Rank1 Rank2 Rank3\n");
186 dump_loop(param, &__wld_dump);
189 static void __dqsgd_dump(void __iomem *dx_base)
192 u32 lcdlr2 = readl(dx_base + MPHY_DX_LCDLR2);
193 u32 gtr = readl(dx_base + MPHY_DX_GTR);
195 for (rank = 0; rank < 4; rank++) {
196 u32 dqsgd = (lcdlr2 >> (8 * rank)) & 0xff; /* Delay */
197 u32 dgsl = (gtr >> (3 * rank)) & 0x7; /* System Latency */
199 printf(FS PRINTF_FORMAT "+%dT", dqsgd, dgsl);
203 static void dqsgd_dump(const struct uniphier_ddrmphy_param *param)
205 printf("\n--- DQS Gating Delay ---\n");
206 printf(" Rank0 Rank1 Rank2 Rank3\n");
208 dump_loop(param, &__dqsgd_dump);
211 static void __mdl_dump(void __iomem *dx_base)
214 u32 mdl = readl(dx_base + MPHY_DX_MDLR);
216 for (i = 0; i < 3; i++)
217 printf(FS PRINTF_FORMAT, (mdl >> (8 * i)) & 0xff);
220 static void mdl_dump(const struct uniphier_ddrmphy_param *param)
222 printf("\n--- Master Delay Line ---\n");
223 printf(" IPRD TPRD MDLD\n");
225 dump_loop(param, &__mdl_dump);
228 #define REG_DUMP(x) \
229 { int ofst = MPHY_ ## x; void __iomem *reg = phy_base + ofst; \
230 printf("%3d: %-10s: %p : %08x\n", \
231 ofst >> MPHY_SHIFT, #x, reg, readl(reg)); }
233 #define DX_REG_DUMP(dx, x) \
234 { int ofst = MPHY_DX_BASE + MPHY_DX_STRIDE * (dx) + \
236 void __iomem *reg = phy_base + ofst; \
237 printf("%3d: DX%d%-7s: %p : %08x\n", \
238 ofst >> MPHY_SHIFT, (dx), #x, reg, readl(reg)); }
240 static void reg_dump(const struct uniphier_ddrmphy_param *param)
242 void __iomem *phy_base;
245 printf("\n--- DDR Multi PHY registers ---\n");
247 for (phy = 0; phy < param->nr_phy; phy++) {
248 phy_base = ioremap(param->phy[phy].base, SZ_4K);
250 printf("== PHY%d (base: %08x) ==\n", phy,
251 ptr_to_uint(phy_base));
252 printf(" No: Name : Address : Data\n");
282 for (dx = 0; dx < param->phy[phy].nr_dx; dx++) {
283 DX_REG_DUMP(dx, GCR0);
284 DX_REG_DUMP(dx, GCR1);
285 DX_REG_DUMP(dx, GCR2);
286 DX_REG_DUMP(dx, GCR3);
287 DX_REG_DUMP(dx, GTR);
294 static int do_ddrm(struct cmd_tbl *cmdtp, int flag, int argc,
297 const struct uniphier_ddrmphy_param *param;
300 param = uniphier_get_ddrmphy_param();
302 pr_err("unsupported SoC\n");
303 return CMD_RET_FAILURE;
311 if (!strcmp(cmd, "zq") || !strcmp(cmd, "all"))
314 if (!strcmp(cmd, "wbdl") || !strcmp(cmd, "all"))
317 if (!strcmp(cmd, "rbdl") || !strcmp(cmd, "all"))
320 if (!strcmp(cmd, "wld") || !strcmp(cmd, "all"))
323 if (!strcmp(cmd, "dqsgd") || !strcmp(cmd, "all"))
326 if (!strcmp(cmd, "mdl") || !strcmp(cmd, "all"))
329 if (!strcmp(cmd, "reg") || !strcmp(cmd, "all"))
332 return CMD_RET_SUCCESS;
337 "UniPhier DDR Multi PHY parameters dumper",
338 "- dump all of the following\n"
339 "ddrm zq - dump Impedance Data\n"
340 "ddrm wbdl - dump Write Bit Delay\n"
341 "ddrm rbdl - dump Read Bit Delay\n"
342 "ddrm wld - dump Write Leveling\n"
343 "ddrm dqsgd - dump DQS Gating Delay\n"
344 "ddrm mdl - dump Master Delay Line\n"
345 "ddrm reg - dump registers\n"