From: Erez Geva <ErezGeva2@xxxxxxxxx>
Some flash devices need OTP parameters in device tree.
As we can not deduce the parameters based on JEDEC ID or SFDP.
Signed-off-by: Erez Geva <ErezGeva2@xxxxxxxxx>
---
.../bindings/mtd/jedec,spi-nor.yaml | 37 +++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
index 6e3afb42926e..d502b7fab2ce 100644
--- a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
+++ b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
@@ -90,6 +90,43 @@ properties:
the SRWD bit while writing the status register. WP# signal hard strapped to GND
can be a valid use case.
+ opt_n_regions:
+ type: u32
+ description:
+ Some flash devices need OTP parameters in the device tree.
+ As we can not deduce the parameters based on JEDEC ID or SFDP.
+ This parameter indicates the number of OTP regions.
+ The value must be larger than 1 and mandatory for OTP.
+
+ otp_len:
+ type: u32
+ description:
+ Some flash devices need OTP parameters in the device tree.
+ As we can not deduce the parameters based on JEDEC ID or SFDP.
+ This parameter indicates the size (length) in bytes of an OTP region.
+ Currently the driver supports symmetric OTP,
+ which means all regions must use the same size.
+ The value must be positive and mandatory for OTP.
+
+ otp_offset:
+ type: u32
+ description:
+ Some flash devices need OTP parameters in the device tree.
+ As we can not deduce the parameters based on JEDEC ID or SFDP.
+ This parameter indicates the offset in bytes of
+ an OTP region relative to its previous.
+ User can omit it if the offset equals the length.
+ Or in case we have a single OTP region.
+
+ otp_base:
+ type: u32
+ description:
+ Some flash devices need OTP parameters in the device tree.
+ As we can not deduce the parameters based on JEDEC ID or SFDP.
+ This parameter indicates the base in bytes of the first OTP region.
+ User can omit it if the base is zero.
+ I.e. the address of the first OTP region starts from 0.
+
reset-gpios:
description:
A GPIO line connected to the RESET (active low) signal of the device.
--
2.39.5
