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refactor(stm32mp1): drop the "st,stm32-nvmem-layout" node

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Simplify the DT parsing by removing the parsing of the nvmem layout node
with "st,stm32-nvmem-layout" compatible.

The expected OTP NAME can directly be found in a sub-node named
NAME@ADDRESS of the BSEC node, the NVMEM provider node.

This patch also removes this specific binding introduced for TF-A.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Ic703385fad1bec5bef1cee583fbe9fbbf6aea216
This commit is contained in:
Patrick Delaunay 2022-03-01 09:56:03 +01:00 • committed by Yann Gautier
parent b9a6dbc1ba
commit c5bf1b0971
2 changed files with 6 additions and 23 deletions
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28
plat/st/common/stm32mp_dt.c
View file

@ -326,48 +326,32 @@ const char *dt_get_board_model(void)
int dt_find_otp_name(const char *name, uint32_t *otp, uint32_t *otp_len)
{
int node;
int index, len;
int len;
const fdt32_t *cuint;
if ((name == NULL) || (otp == NULL)) {
return -FDT_ERR_BADVALUE;
}
node = fdt_node_offset_by_compatible(fdt, -1, DT_NVMEM_LAYOUT_COMPAT);
node = fdt_node_offset_by_compatible(fdt, -1, DT_BSEC_COMPAT);
if (node < 0) {
return node;
}
index = fdt_stringlist_search(fdt, node, "nvmem-cell-names", name);
if (index < 0) {
return index;
}
cuint = fdt_getprop(fdt, node, "nvmem-cells", &len);
if (cuint == NULL) {
return -FDT_ERR_NOTFOUND;
}
if ((index * (int)sizeof(uint32_t)) > len) {
return -FDT_ERR_BADVALUE;
}
cuint += index;
node = fdt_node_offset_by_phandle(fdt, fdt32_to_cpu(*cuint));
node = fdt_subnode_offset(fdt, node, name);
if (node < 0) {
ERROR("Malformed nvmem_layout node: ignored\n");
ERROR("nvmem node %s not found\n", name);
return node;
}
cuint = fdt_getprop(fdt, node, "reg", &len);
if ((cuint == NULL) || (len != (2 * (int)sizeof(uint32_t)))) {
ERROR("Malformed nvmem_layout node: ignored\n");
ERROR("Malformed nvmem node %s: ignored\n", name);
return -FDT_ERR_BADVALUE;
}
if (fdt32_to_cpu(*cuint) % sizeof(uint32_t)) {
ERROR("Misaligned nvmem_layout element: ignored\n");
ERROR("Misaligned nvmem %s element: ignored\n", name);
return -FDT_ERR_BADVALUE;
}

1
plat/st/stm32mp1/stm32mp1_def.h
View file

@ -621,7 +621,6 @@ static inline uintptr_t tamp_bkpr(uint32_t idx)
#define DT_DDR_COMPAT "st,stm32mp1-ddr"
#endif
#define DT_IWDG_COMPAT "st,stm32mp1-iwdg"
#define DT_NVMEM_LAYOUT_COMPAT "st,stm32-nvmem-layout"
#define DT_PWR_COMPAT "st,stm32mp1,pwr-reg"
#if STM32MP13
#define DT_RCC_CLK_COMPAT "st,stm32mp13-rcc"