/*
- * (C) Copyright 2017
- * Vikas Manocha, <vikas.manocha@st.com>
+ * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
+ * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <ram.h>
#include <asm/io.h>
+#define MEM_MODE_MASK GENMASK(2, 0)
+#define NOT_FOUND 0xff
+
DECLARE_GLOBAL_DATA_PTR;
struct stm32_fmc_regs {
{
struct stm32_sdram_params *params = dev_get_platdata(dev);
struct bank_params *bank_params;
+ struct ofnode_phandle_args args;
+ u32 *syscfg_base;
+ u32 mem_remap;
ofnode bank_node;
char *bank_name;
u8 bank = 0;
+ int ret;
+
+ mem_remap = dev_read_u32_default(dev, "st,mem_remap", NOT_FOUND);
+ if (mem_remap != NOT_FOUND) {
+ ret = dev_read_phandle_with_args(dev, "st,syscfg", NULL, 0, 0,
+ &args);
+ if (ret) {
+ debug("%s: can't find syscon device (%d)\n", __func__,
+ ret);
+ return ret;
+ }
+
+ syscfg_base = (u32 *)ofnode_get_addr(args.node);
+
+ /* set memory mapping selection */
+ clrsetbits_le32(syscfg_base, MEM_MODE_MASK, mem_remap);
+ } else {
+ debug("%s: cannot find st,mem_remap property\n", __func__);
+ }
dev_for_each_subnode(bank_node, dev) {
/* extract the bank index from DT */
bank_name = (char *)ofnode_get_name(bank_node);
strsep(&bank_name, "@");
if (!bank_name) {
- error("missing sdram bank index");
+ pr_err("missing sdram bank index");
return -EINVAL;
}
(long unsigned int *)&bank_params->target_bank);
if (bank_params->target_bank >= MAX_SDRAM_BANK) {
- error("Found bank %d , but only bank 0 and 1 are supported",
+ pr_err("Found bank %d , but only bank 0 and 1 are supported",
bank_params->target_bank);
return -EINVAL;
}
sizeof(struct stm32_sdram_control));
if (!params->bank_params[bank].sdram_control) {
- error("st,sdram-control not found for %s",
+ pr_err("st,sdram-control not found for %s",
ofnode_get_name(bank_node));
return -EINVAL;
}
sizeof(struct stm32_sdram_timing));
if (!params->bank_params[bank].sdram_timing) {
- error("st,sdram-timing not found for %s",
+ pr_err("st,sdram-timing not found for %s",
ofnode_get_name(bank_node));
return -EINVAL;
}