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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2025 Toradex - https://www.toradex.com/
*/
#include <fdt_support.h>
#include <linux/errno.h>
#include <stdint.h>
#include "ddrs_patch.h"
static int ftd_apply_ddrss_prop_patch(void *fdt, int mem_offset, const char *prop_name,
const struct ddr_reg_patch *patch_set, int patch_num)
{
int ret;
int i;
u32 val;
for (i = 0; i < patch_num; i++, patch_set++) {
val = cpu_to_be32(patch_set->val);
ret = fdt_setprop_inplace_namelen_partial(fdt, mem_offset,
prop_name, strlen(prop_name),
patch_set->off * sizeof(u32),
&val, sizeof(u32));
if (ret)
return ret;
}
return 0;
}
static int fdt_apply_ddrss_patch(void *fdt, int msmc_offset, const char *ddrs_ctrl,
const struct ddrss_patch *ddrss_patch)
{
int ret;
int mem_offset;
mem_offset = fdt_subnode_offset(fdt, msmc_offset, ddrs_ctrl);
if (mem_offset < 0)
return -ENODEV;
ret = fdt_setprop_inplace_u32(fdt, mem_offset, "ti,ddr-fhs-cnt", ddrss_patch->ddr_fhs_cnt);
if (ret)
return ret;
ret = ftd_apply_ddrss_prop_patch(fdt, mem_offset, "ti,ctl-data",
ddrss_patch->ctl_patch, ddrss_patch->ctl_patch_num);
if (ret)
return ret;
ret = ftd_apply_ddrss_prop_patch(fdt, mem_offset, "ti,pi-data",
ddrss_patch->pi_patch, ddrss_patch->pi_patch_num);
if (ret)
return ret;
ret = ftd_apply_ddrss_prop_patch(fdt, mem_offset, "ti,phy-data",
ddrss_patch->phy_patch, ddrss_patch->phy_patch_num);
if (ret)
return ret;
return 0;
}
int aquila_am69_fdt_apply_ddr_patch(void *fdt, struct ddrss_patch *ddrss_patch[4], u32 intrlv_size)
{
int ret;
int msmc_offset;
msmc_offset = fdt_path_offset(fdt, "/bus@100000/bus@30000000/msmc");
if (msmc_offset < 0)
return -ENODEV;
ret = fdt_setprop_inplace_u32(fdt, msmc_offset, "intrlv-size", intrlv_size);
if (ret)
return ret;
ret = fdt_apply_ddrss_patch(fdt, msmc_offset, "memorycontroller@2990000", ddrss_patch[0]);
if (ret)
return ret;
ret = fdt_apply_ddrss_patch(fdt, msmc_offset, "memorycontroller@29b0000", ddrss_patch[1]);
if (ret)
return ret;
ret = fdt_apply_ddrss_patch(fdt, msmc_offset, "memorycontroller@29d0000", ddrss_patch[2]);
if (ret)
return ret;
ret = fdt_apply_ddrss_patch(fdt, msmc_offset, "memorycontroller@29f0000", ddrss_patch[3]);
if (ret)
return ret;
return 0;
}
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