i.MX fuse numbers are sometimes referred to as the index of the 32bit
word, sometimes as bit offsets and the device in /dev/imx_ocotp counts
in bytes. To avoid more confusion add some comments to the function
headers of functions reading/writing the fuses that clearly state that
they take the 32bit word number as input.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
arch/arm/mach-imx/ele.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-imx/ele.c b/arch/arm/mach-imx/ele.c
index 095eaec8f6..ce5ad287d8 100644
--- a/arch/arm/mach-imx/ele.c
+++ b/arch/arm/mach-imx/ele.c
@@ -207,6 +207,16 @@ int imx93_ele_load_fw(void *bl33)
return 0;
}
+/*
+ * ele_read_common_fuse - read a fuse
+ * @fuse_id: The fuse to read (in 32bit word number)
+ * fuse_word: The value read from the fuse
+ * @response: on return contains the response from ELE
+ *
+ * This reads the shadow value of the fuse @fuse_id.
+ *
+ * Return: 0 when the ELE call succeeds, negative error code otherwise
+ */
int ele_read_common_fuse(u16 fuse_id, u32 *fuse_word, u32 *response)
{
struct ele_msg msg;
@@ -228,6 +238,16 @@ int ele_read_common_fuse(u16 fuse_id, u32 *fuse_word, u32 *response)
return ret;
}
+/*
+ * ele_read_shadow_fuse - read a fuse
+ * @fuse_id: The fuse to read (in 32bit word number)
+ * fuse_word: The value read from the fuse
+ * @response: on return contains the response from ELE
+ *
+ * This reads the shadow value of the fuse @fuse_id.
+ *
+ * Return: 0 when the ELE call succeeds, negative error code otherwise
+ */
int ele_read_shadow_fuse(u16 fuse_id, u32 *fuse_word, u32 *response)
{
struct ele_msg msg;
@@ -251,7 +271,7 @@ int ele_read_shadow_fuse(u16 fuse_id, u32 *fuse_word, u32 *response)
/*
* ele_write_fuse - write a fuse
- * @fuse_id: The fuse to write to
+ * @fuse_id: The fuse to write to (in 32bit word number)
* @fuse_val: The value to write to the fuse
* @lock: lock fuse after writing
* @response: on return contains the response from ELE
--
2.39.2
