[RFC 04/10] eeprom: starfive: Correct get_pcb_revision_from_eeprom()

Hal Feng
2025-08-29T14:31:12Z

pcb_revision is stored in the pcb_revision field of ATOM4. Correct it.
Move the function description to the header file.
Remove the function calls in board/starfive/visionfive2/.

Fixes: aea1bd95b61e ("eeprom: starfive: Enable ID EEPROM configuration")
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
---
arch/riscv/include/asm/arch-jh7110/eeprom.h | 5 +++++
board/starfive/visionfive2/spl.c | 18 ++++++-----------
.../visionfive2/starfive_visionfive2.c | 20 ++++++-------------
.../visionfive2/visionfive2-i2c-eeprom.c | 11 ++--------
4 files changed, 19 insertions(+), 35 deletions(-)

diff --git a/arch/riscv/include/asm/arch-jh7110/eeprom.h b/arch/riscv/include/asm/arch-jh7110/eeprom.h
index 6d0a0ba0c4a..025f1d32c49 100644
--- a/arch/riscv/include/asm/arch-jh7110/eeprom.h
+++ b/arch/riscv/include/asm/arch-jh7110/eeprom.h
@@ -9,6 +9,11 @@

#include <linux/types.h>

+/**
+ * get_pcb_revision_from_eeprom() - get the PCB revision
+ *
+ * @return: the PCB revision or 0xFF on error.
+ */
u8 get_pcb_revision_from_eeprom(void);

/**
diff --git a/board/starfive/visionfive2/spl.c b/board/starfive/visionfive2/spl.c
index 3dfa931b655..901e7b58f36 100644
--- a/board/starfive/visionfive2/spl.c
+++ b/board/starfive/visionfive2/spl.c
@@ -126,19 +126,13 @@ int board_fit_config_name_match(const char *name)
!strncmp(get_product_id_from_eeprom(), "STAR64", 6)) {
return 0;
} else if (!strcmp(name, "starfive/jh7110-starfive-visionfive-2-v1.2a") &&
- !strncmp(get_product_id_from_eeprom(), "VF7110", 6)) {
- switch (get_pcb_revision_from_eeprom()) {
- case 'a':
- case 'A':
- return 0;
- }
+ (!strncmp(get_product_id_from_eeprom(), "VF7110A", 7) ||
+ !strncmp(get_product_id_from_eeprom(), "VF7110a", 7))) {
+ return 0;
} else if (!strcmp(name, "starfive/jh7110-starfive-visionfive-2-v1.3b") &&
- !strncmp(get_product_id_from_eeprom(), "VF7110", 6)) {
- switch (get_pcb_revision_from_eeprom()) {
- case 'b':
- case 'B':
- return 0;
- }
+ (!strncmp(get_product_id_from_eeprom(), "VF7110B", 7) ||
+ !strncmp(get_product_id_from_eeprom(), "VF7110b", 7))) {
+ return 0;
}

return -EINVAL;
diff --git a/board/starfive/visionfive2/starfive_visionfive2.c b/board/starfive/visionfive2/starfive_visionfive2.c
index bfbb11a2ee7..f38433e94ac 100644
--- a/board/starfive/visionfive2/starfive_visionfive2.c
+++ b/board/starfive/visionfive2/starfive_visionfive2.c
@@ -59,20 +59,12 @@ static void set_fdtfile(void)
fdtfile = "starfive/jh7110-milkv-mars.dtb";
} else if (!strncmp(get_product_id_from_eeprom(), "STAR64", 6)) {
fdtfile = "starfive/jh7110-pine64-star64.dtb";
- } else if (!strncmp(get_product_id_from_eeprom(), "VF7110", 6)) {
- switch (get_pcb_revision_from_eeprom()) {
- case 'a':
- case 'A':
- fdtfile = "starfive/jh7110-starfive-visionfive-2-v1.2a.dtb";
- break;
- case 'b':
- case 'B':
- fdtfile = "starfive/jh7110-starfive-visionfive-2-v1.3b.dtb";
- break;
- default:
- log_err("Unknown revision\n");
- return;
- }
+ } else if (!strncmp(get_product_id_from_eeprom(), "VF7110A", 7) ||
+ !strncmp(get_product_id_from_eeprom(), "VF7110a", 7)) {
+ fdtfile = "starfive/jh7110-starfive-visionfive-2-v1.2a.dtb";
+ } else if (!strncmp(get_product_id_from_eeprom(), "VF7110B", 7) ||
+ !strncmp(get_product_id_from_eeprom(), "VF7110b", 7)) {
+ fdtfile = "starfive/jh7110-starfive-visionfive-2-v1.3b.dtb";
} else {
log_err("Unknown product\n");
return;
diff --git a/board/starfive/visionfive2/visionfive2-i2c-eeprom.c b/board/starfive/visionfive2/visionfive2-i2c-eeprom.c
index 3866d07f9d4..43b8af4fc59 100644
--- a/board/starfive/visionfive2/visionfive2-i2c-eeprom.c
+++ b/board/starfive/visionfive2/visionfive2-i2c-eeprom.c
@@ -535,19 +535,12 @@ int mac_read_from_eeprom(void)
return 0;
}

-/**
- * get_pcb_revision_from_eeprom - get the PCB revision
- *
- * 1.2A return 'A'/'a', 1.3B return 'B'/'b',other values are illegal
- */
u8 get_pcb_revision_from_eeprom(void)
{
- u8 pv = 0xFF;
-
if (read_eeprom())
- return pv;
+ return 0xFF;

- return pbuf.eeprom.atom1.data.pstr[6];
+ return pbuf.eeprom.atom4.data.pcb_revision;
}

u8 get_ddr_size_from_eeprom(void)
--
2.43.2