stpmic1: add NVM update support in fuse command
Add functions to read/update the non volatile memory of STPMIC1
(8 bytes-register at 0xF8 address) and allow access
with fuse command (bank=1, word > 0xF8).
For example:
STM32MP> fuse read 1 0xf8 8
Reading bank 1:
Word 0x000000f8: 000000ee 00000092 000000c0 00000002
Word 0x000000fc: 000000f2 00000080 00000002 00000033
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/drivers/misc/stm32mp_fuse.c b/drivers/misc/stm32mp_fuse.c
index 33943a2..8dc246b 100644
--- a/drivers/misc/stm32mp_fuse.c
+++ b/drivers/misc/stm32mp_fuse.c
@@ -9,8 +9,10 @@
#include <errno.h>
#include <dm/device.h>
#include <dm/uclass.h>
+#include <power/stpmic1.h>
#define STM32MP_OTP_BANK 0
+#define STM32MP_NVM_BANK 1
/*
* The 'fuse' command API
@@ -34,6 +36,13 @@
ret = 0;
break;
+#ifdef CONFIG_PMIC_STPMIC1
+ case STM32MP_NVM_BANK:
+ *val = 0;
+ ret = stpmic1_shadow_read_byte(word, (u8 *)val);
+ break;
+#endif /* CONFIG_PMIC_STPMIC1 */
+
default:
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
ret = -EINVAL;
@@ -61,6 +70,12 @@
return ret;
ret = 0;
break;
+
+#ifdef CONFIG_PMIC_STPMIC1
+ case STM32MP_NVM_BANK:
+ ret = stpmic1_nvm_write_byte(word, (u8 *)&val);
+ break;
+#endif /* CONFIG_PMIC_STPMIC1 */
default:
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
@@ -89,6 +104,13 @@
ret = 0;
break;
+#ifdef CONFIG_PMIC_STPMIC1
+ case STM32MP_NVM_BANK:
+ *val = 0;
+ ret = stpmic1_nvm_read_byte(word, (u8 *)val);
+ break;
+#endif /* CONFIG_PMIC_STPMIC1 */
+
default:
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
ret = -EINVAL;
@@ -117,6 +139,12 @@
ret = 0;
break;
+#ifdef CONFIG_PMIC_STPMIC1
+ case STM32MP_NVM_BANK:
+ ret = stpmic1_shadow_write_byte(word, (u8 *)&val);
+ break;
+#endif /* CONFIG_PMIC_STPMIC1 */
+
default:
printf("stm32mp %s: wrong value for bank %i\n",
__func__, bank);