[PATCH 3/8] firmware: meson: sm: Add thermal calibration SMC call
From: Ronald Claveau
Date: Fri Apr 10 2026 - 12:50:25 EST
Add SM_THERMAL_CALIB_READ at SMC ID 0x82000047 in the command
table and implement meson_sm_get_thermal_calib(), which forwards the
tsensor_id argument to the secure monitor and returns the calibration data.
Also realign the CMD() column to improve readability.
Signed-off-by: Ronald Claveau <linux-kernel-dev@xxxxxxxx>
---
drivers/firmware/meson/meson_sm.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/firmware/meson/meson_sm.c b/drivers/firmware/meson/meson_sm.c
index 3ab67aaa9e5da..da0dbcd8a2ff2 100644
--- a/drivers/firmware/meson/meson_sm.c
+++ b/drivers/firmware/meson/meson_sm.c
@@ -41,12 +41,13 @@ static const struct meson_sm_chip gxbb_chip = {
.cmd_shmem_in_base = 0x82000020,
.cmd_shmem_out_base = 0x82000021,
.cmd = {
- CMD(SM_EFUSE_READ, 0x82000030),
- CMD(SM_EFUSE_WRITE, 0x82000031),
+ CMD(SM_EFUSE_READ, 0x82000030),
+ CMD(SM_EFUSE_WRITE, 0x82000031),
CMD(SM_EFUSE_USER_MAX, 0x82000033),
- CMD(SM_GET_CHIP_ID, 0x82000044),
- CMD(SM_A1_PWRC_SET, 0x82000093),
- CMD(SM_A1_PWRC_GET, 0x82000095),
+ CMD(SM_GET_CHIP_ID, 0x82000044),
+ CMD(SM_THERMAL_CALIB_READ, 0x82000047),
+ CMD(SM_A1_PWRC_SET, 0x82000093),
+ CMD(SM_A1_PWRC_GET, 0x82000095),
{ /* sentinel */ },
},
};
@@ -245,6 +246,14 @@ struct meson_sm_firmware *meson_sm_get(struct device_node *sm_node)
}
EXPORT_SYMBOL_GPL(meson_sm_get);
+int meson_sm_get_thermal_calib(struct meson_sm_firmware *fw, u32 *trim_info,
+ u32 tsensor_id)
+{
+ return meson_sm_call(fw, SM_THERMAL_CALIB_READ, trim_info, tsensor_id,
+ 0, 0, 0, 0);
+}
+EXPORT_SYMBOL_GPL(meson_sm_get_thermal_calib);
+
#define SM_CHIP_ID_LENGTH 119
#define SM_CHIP_ID_OFFSET 4
#define SM_CHIP_ID_SIZE 12
--
2.49.0