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dt-bindings: nvmem: Add properties needed for blowing fuses

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On some systems it's possible to actually blow the fuses in the qfprom
from the kernel.  Add properties to support that.

NOTE: Whether this is possible depends on the BIOS settings and
whether the kernel has permissions here, so not all boards will be
able to blow fuses in the kernel.

Signed-off-by: Ravi Kumar Bokka <rbokka@codeaurora.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200722100705.7772-11-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ravi Kumar Bokka 2020-07-22 11:07:01 +01:00 committed by Greg Kroah-Hartman
parent 83281b7e22
commit a37a15f748
1 changed files with 48 additions and 2 deletions
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50
Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml
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@ -17,8 +17,27 @@ properties:
const: qcom,qfprom
reg:
items:
- description: The corrected region.
# If the QFPROM is read-only OS image then only the corrected region
# needs to be provided. If the QFPROM is writable then all 4 regions
# must be provided.
oneOf:
- items:
- description: The corrected region.
- items:
- description: The corrected region.
- description: The raw region.
- description: The config region.
- description: The security control region.
# Clock must be provided if QFPROM is writable from the OS image.
clocks:
maxItems: 1
clock-names:
const: core
# Supply reference must be provided if QFPROM is writable from the OS image.
vcc-supply:
description: Our power supply.
# Needed if any child nodes are present.
"#address-cells":
@ -31,6 +50,33 @@ required:
- reg
examples:
- |
#include <dt-bindings/clock/qcom,gcc-sc7180.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
efuse@784000 {
compatible = "qcom,qfprom";
reg = <0 0x00784000 0 0x8ff>,
<0 0x00780000 0 0x7a0>,
<0 0x00782000 0 0x100>,
<0 0x00786000 0 0x1fff>;
clocks = <&gcc GCC_SEC_CTRL_CLK_SRC>;
clock-names = "core";
#address-cells = <1>;
#size-cells = <1>;
vcc-supply = <&vreg_l11a_1p8>;
hstx-trim-primary@25b {
reg = <0x25b 0x1>;
bits = <1 3>;
};
};
};
- |
soc {
#address-cells = <2>;