--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 Rockchip Electronics Co., Ltd
+ */
+
+#ifndef _ASM_ARCH_SDRAM_PCTL_PX30_H
+#define _ASM_ARCH_SDRAM_PCTL_PX30_H
+#include <asm/arch-rockchip/sdram_common.h>
+
+struct ddr_pctl_regs {
+ u32 pctl[30][2];
+};
+
+/* ddr pctl registers define */
+#define DDR_PCTL2_MSTR 0x0
+#define DDR_PCTL2_STAT 0x4
+#define DDR_PCTL2_MSTR1 0x8
+#define DDR_PCTL2_MRCTRL0 0x10
+#define DDR_PCTL2_MRCTRL1 0x14
+#define DDR_PCTL2_MRSTAT 0x18
+#define DDR_PCTL2_MRCTRL2 0x1c
+#define DDR_PCTL2_DERATEEN 0x20
+#define DDR_PCTL2_DERATEINT 0x24
+#define DDR_PCTL2_PWRCTL 0x30
+#define DDR_PCTL2_PWRTMG 0x34
+#define DDR_PCTL2_HWLPCTL 0x38
+#define DDR_PCTL2_RFSHCTL0 0x50
+#define DDR_PCTL2_RFSHCTL1 0x54
+#define DDR_PCTL2_RFSHCTL2 0x58
+#define DDR_PCTL2_RFSHCTL4 0x5c
+#define DDR_PCTL2_RFSHCTL3 0x60
+#define DDR_PCTL2_RFSHTMG 0x64
+#define DDR_PCTL2_RFSHTMG1 0x68
+#define DDR_PCTL2_RFSHCTL5 0x6c
+#define DDR_PCTL2_INIT0 0xd0
+#define DDR_PCTL2_INIT1 0xd4
+#define DDR_PCTL2_INIT2 0xd8
+#define DDR_PCTL2_INIT3 0xdc
+#define DDR_PCTL2_INIT4 0xe0
+#define DDR_PCTL2_INIT5 0xe4
+#define DDR_PCTL2_INIT6 0xe8
+#define DDR_PCTL2_INIT7 0xec
+#define DDR_PCTL2_DIMMCTL 0xf0
+#define DDR_PCTL2_RANKCTL 0xf4
+#define DDR_PCTL2_CHCTL 0xfc
+#define DDR_PCTL2_DRAMTMG0 0x100
+#define DDR_PCTL2_DRAMTMG1 0x104
+#define DDR_PCTL2_DRAMTMG2 0x108
+#define DDR_PCTL2_DRAMTMG3 0x10c
+#define DDR_PCTL2_DRAMTMG4 0x110
+#define DDR_PCTL2_DRAMTMG5 0x114
+#define DDR_PCTL2_DRAMTMG6 0x118
+#define DDR_PCTL2_DRAMTMG7 0x11c
+#define DDR_PCTL2_DRAMTMG8 0x120
+#define DDR_PCTL2_DRAMTMG9 0x124
+#define DDR_PCTL2_DRAMTMG10 0x128
+#define DDR_PCTL2_DRAMTMG11 0x12c
+#define DDR_PCTL2_DRAMTMG12 0x130
+#define DDR_PCTL2_DRAMTMG13 0x134
+#define DDR_PCTL2_DRAMTMG14 0x138
+#define DDR_PCTL2_DRAMTMG15 0x13c
+#define DDR_PCTL2_DRAMTMG16 0x140
+#define DDR_PCTL2_ZQCTL0 0x180
+#define DDR_PCTL2_ZQCTL1 0x184
+#define DDR_PCTL2_ZQCTL2 0x188
+#define DDR_PCTL2_ZQSTAT 0x18c
+#define DDR_PCTL2_DFITMG0 0x190
+#define DDR_PCTL2_DFITMG1 0x194
+#define DDR_PCTL2_DFILPCFG0 0x198
+#define DDR_PCTL2_DFILPCFG1 0x19c
+#define DDR_PCTL2_DFIUPD0 0x1a0
+#define DDR_PCTL2_DFIUPD1 0x1a4
+#define DDR_PCTL2_DFIUPD2 0x1a8
+#define DDR_PCTL2_DFIMISC 0x1b0
+#define DDR_PCTL2_DFITMG2 0x1b4
+#define DDR_PCTL2_DFITMG3 0x1b8
+#define DDR_PCTL2_DFISTAT 0x1bc
+#define DDR_PCTL2_DBICTL 0x1c0
+#define DDR_PCTL2_ADDRMAP0 0x200
+#define DDR_PCTL2_ADDRMAP1 0x204
+#define DDR_PCTL2_ADDRMAP2 0x208
+#define DDR_PCTL2_ADDRMAP3 0x20c
+#define DDR_PCTL2_ADDRMAP4 0x210
+#define DDR_PCTL2_ADDRMAP5 0x214
+#define DDR_PCTL2_ADDRMAP6 0x218
+#define DDR_PCTL2_ADDRMAP7 0x21c
+#define DDR_PCTL2_ADDRMAP8 0x220
+#define DDR_PCTL2_ADDRMAP9 0x224
+#define DDR_PCTL2_ADDRMAP10 0x228
+#define DDR_PCTL2_ADDRMAP11 0x22c
+#define DDR_PCTL2_ODTCFG 0x240
+#define DDR_PCTL2_ODTMAP 0x244
+#define DDR_PCTL2_SCHED 0x250
+#define DDR_PCTL2_SCHED1 0x254
+#define DDR_PCTL2_PERFHPR1 0x25c
+#define DDR_PCTL2_PERFLPR1 0x264
+#define DDR_PCTL2_PERFWR1 0x26c
+#define DDR_PCTL2_DQMAP0 0x280
+#define DDR_PCTL2_DQMAP1 0x284
+#define DDR_PCTL2_DQMAP2 0x288
+#define DDR_PCTL2_DQMAP3 0x28c
+#define DDR_PCTL2_DQMAP4 0x290
+#define DDR_PCTL2_DQMAP5 0x294
+#define DDR_PCTL2_DBG0 0x300
+#define DDR_PCTL2_DBG1 0x304
+#define DDR_PCTL2_DBGCAM 0x308
+#define DDR_PCTL2_DBGCMD 0x30c
+#define DDR_PCTL2_DBGSTAT 0x310
+#define DDR_PCTL2_SWCTL 0x320
+#define DDR_PCTL2_SWSTAT 0x324
+#define DDR_PCTL2_POISONCFG 0x36c
+#define DDR_PCTL2_POISONSTAT 0x370
+#define DDR_PCTL2_ADVECCINDEX 0x374
+#define DDR_PCTL2_ADVECCSTAT 0x378
+#define DDR_PCTL2_PSTAT 0x3fc
+#define DDR_PCTL2_PCCFG 0x400
+#define DDR_PCTL2_PCFGR_n 0x404
+#define DDR_PCTL2_PCFGW_n 0x408
+#define DDR_PCTL2_PCTRL_n 0x490
+
+/* PCTL2_MRSTAT */
+#define MR_WR_BUSY BIT(0)
+
+void pctl_read_mr(void __iomem *pctl_base, u32 rank, u32 mr_num);
+int pctl_write_mr(void __iomem *pctl_base, u32 rank, u32 mr_num, u32 arg,
+ u32 dramtype);
+int pctl_write_vrefdq(void __iomem *pctl_base, u32 rank, u32 vrefrate,
+ u32 dramtype);
+
+u32 pctl_dis_zqcs_aref(void __iomem *pctl_base);
+void pctl_rest_zqcs_aref(void __iomem *pctl_base, u32 dis_auto_zq);
+
+u32 pctl_remodify_sdram_params(struct ddr_pctl_regs *pctl_regs,
+ struct sdram_cap_info *cap_info,
+ u32 dram_type);
+int pctl_cfg(void __iomem *pctl_base, struct ddr_pctl_regs *pctl_regs,
+ u32 sr_idle, u32 pd_idle);
+
+#endif
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2018 Rockchip Electronics Co., Ltd.
+ */
+
+#include <common.h>
+#include <ram.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/sdram.h>
+#include <asm/arch-rockchip/sdram_pctl_px30.h>
+
+/*
+ * rank = 1: cs0
+ * rank = 2: cs1
+ */
+void pctl_read_mr(void __iomem *pctl_base, u32 rank, u32 mr_num)
+{
+ writel((rank << 4) | (1 << 0), pctl_base + DDR_PCTL2_MRCTRL0);
+ writel((mr_num << 8), pctl_base + DDR_PCTL2_MRCTRL1);
+ setbits_le32(pctl_base + DDR_PCTL2_MRCTRL0, 1u << 31);
+ while (readl(pctl_base + DDR_PCTL2_MRCTRL0) & (1u << 31))
+ continue;
+ while (readl(pctl_base + DDR_PCTL2_MRSTAT) & MR_WR_BUSY)
+ continue;
+}
+
+/* rank = 1: cs0
+ * rank = 2: cs1
+ * rank = 3: cs0 & cs1
+ * note: be careful of keep mr original val
+ */
+int pctl_write_mr(void __iomem *pctl_base, u32 rank, u32 mr_num, u32 arg,
+ u32 dramtype)
+{
+ while (readl(pctl_base + DDR_PCTL2_MRSTAT) & MR_WR_BUSY)
+ continue;
+ if (dramtype == DDR3 || dramtype == DDR4) {
+ writel((mr_num << 12) | (rank << 4) | (0 << 0),
+ pctl_base + DDR_PCTL2_MRCTRL0);
+ writel(arg, pctl_base + DDR_PCTL2_MRCTRL1);
+ } else {
+ writel((rank << 4) | (0 << 0),
+ pctl_base + DDR_PCTL2_MRCTRL0);
+ writel((mr_num << 8) | (arg & 0xff),
+ pctl_base + DDR_PCTL2_MRCTRL1);
+ }
+
+ setbits_le32(pctl_base + DDR_PCTL2_MRCTRL0, 1u << 31);
+ while (readl(pctl_base + DDR_PCTL2_MRCTRL0) & (1u << 31))
+ continue;
+ while (readl(pctl_base + DDR_PCTL2_MRSTAT) & MR_WR_BUSY)
+ continue;
+
+ return 0;
+}
+
+/*
+ * rank : 1:cs0, 2:cs1, 3:cs0&cs1
+ * vrefrate: 4500: 45%,
+ */
+int pctl_write_vrefdq(void __iomem *pctl_base, u32 rank, u32 vrefrate,
+ u32 dramtype)
+{
+ u32 tccd_l, value;
+ u32 dis_auto_zq = 0;
+
+ if (dramtype != DDR4 || vrefrate < 4500 ||
+ vrefrate > 9200)
+ return (-1);
+
+ tccd_l = (readl(pctl_base + DDR_PCTL2_DRAMTMG4) >> 16) & 0xf;
+ tccd_l = (tccd_l - 4) << 10;
+
+ if (vrefrate > 7500) {
+ /* range 1 */
+ value = ((vrefrate - 6000) / 65) | tccd_l;
+ } else {
+ /* range 2 */
+ value = ((vrefrate - 4500) / 65) | tccd_l | (1 << 6);
+ }
+
+ dis_auto_zq = pctl_dis_zqcs_aref(pctl_base);
+
+ /* enable vrefdq calibratin */
+ pctl_write_mr(pctl_base, rank, 6, value | (1 << 7), dramtype);
+ udelay(1);/* tvrefdqe */
+ /* write vrefdq value */
+ pctl_write_mr(pctl_base, rank, 6, value | (1 << 7), dramtype);
+ udelay(1);/* tvref_time */
+ pctl_write_mr(pctl_base, rank, 6, value | (0 << 7), dramtype);
+ udelay(1);/* tvrefdqx */
+
+ pctl_rest_zqcs_aref(pctl_base, dis_auto_zq);
+
+ return 0;
+}
+
+static int upctl2_update_ref_reg(void __iomem *pctl_base)
+{
+ u32 ret;
+
+ ret = readl(pctl_base + DDR_PCTL2_RFSHCTL3) ^ (1 << 1);
+ writel(ret, pctl_base + DDR_PCTL2_RFSHCTL3);
+
+ return 0;
+}
+
+u32 pctl_dis_zqcs_aref(void __iomem *pctl_base)
+{
+ u32 dis_auto_zq = 0;
+
+ /* disable zqcs */
+ if (!(readl(pctl_base + DDR_PCTL2_ZQCTL0) &
+ (1ul << 31))) {
+ dis_auto_zq = 1;
+ setbits_le32(pctl_base + DDR_PCTL2_ZQCTL0, 1 << 31);
+ }
+
+ /* disable auto refresh */
+ setbits_le32(pctl_base + DDR_PCTL2_RFSHCTL3, 1);
+
+ upctl2_update_ref_reg(pctl_base);
+
+ return dis_auto_zq;
+}
+
+void pctl_rest_zqcs_aref(void __iomem *pctl_base, u32 dis_auto_zq)
+{
+ /* restore zqcs */
+ if (dis_auto_zq)
+ clrbits_le32(pctl_base + DDR_PCTL2_ZQCTL0, 1 << 31);
+
+ /* restore auto refresh */
+ clrbits_le32(pctl_base + DDR_PCTL2_RFSHCTL3, 1);
+
+ upctl2_update_ref_reg(pctl_base);
+}
+
+u32 pctl_remodify_sdram_params(struct ddr_pctl_regs *pctl_regs,
+ struct sdram_cap_info *cap_info,
+ u32 dram_type)
+{
+ u32 tmp = 0, tmp_adr = 0, i;
+
+ for (i = 0; pctl_regs->pctl[i][0] != 0xFFFFFFFF; i++) {
+ if (pctl_regs->pctl[i][0] == 0) {
+ tmp = pctl_regs->pctl[i][1];/* MSTR */
+ tmp_adr = i;
+ }
+ }
+
+ tmp &= ~((3ul << 30) | (3ul << 24) | (3ul << 12));
+
+ switch (cap_info->dbw) {
+ case 2:
+ tmp |= (3ul << 30);
+ break;
+ case 1:
+ tmp |= (2ul << 30);
+ break;
+ case 0:
+ default:
+ tmp |= (1ul << 30);
+ break;
+ }
+
+ /*
+ * If DDR3 or DDR4 MSTR.active_ranks=1,
+ * it will gate memory clock when enter power down.
+ * Force set active_ranks to 3 to workaround it.
+ */
+ if (cap_info->rank == 2 || dram_type == DDR3 ||
+ dram_type == DDR4)
+ tmp |= 3 << 24;
+ else
+ tmp |= 1 << 24;
+
+ tmp |= (2 - cap_info->bw) << 12;
+
+ pctl_regs->pctl[tmp_adr][1] = tmp;
+
+ return 0;
+}
+
+int pctl_cfg(void __iomem *pctl_base, struct ddr_pctl_regs *pctl_regs,
+ u32 sr_idle, u32 pd_idle)
+{
+ u32 i;
+
+ for (i = 0; pctl_regs->pctl[i][0] != 0xFFFFFFFF; i++) {
+ writel(pctl_regs->pctl[i][1],
+ pctl_base + pctl_regs->pctl[i][0]);
+ }
+ clrsetbits_le32(pctl_base + DDR_PCTL2_PWRTMG,
+ (0xff << 16) | 0x1f,
+ ((sr_idle & 0xff) << 16) | (pd_idle & 0x1f));
+
+ clrsetbits_le32(pctl_base + DDR_PCTL2_HWLPCTL,
+ 0xfff << 16,
+ 5 << 16);
+ /* disable zqcs */
+ setbits_le32(pctl_base + DDR_PCTL2_ZQCTL0, 1u << 31);
+
+ return 0;
+}
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