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Subject[PATCH 1/2] nvmem: rockchip-efuse: parse 'rockchip,efuse-size'
Date
The eFuse size is defined in property <reg> before, but the length
of registers is not equal to the size on some platforms, so we
add a new property to redefine it.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
---
Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt | 4 ++++
drivers/nvmem/rockchip-efuse.c | 4 +++-
2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt b/Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt
index 194926f..d206aa1 100644
--- a/Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt
+++ b/Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt
@@ -11,6 +11,10 @@ Required properties:
- clocks: Should be the clock id of eFuse
- clock-names: Should be "pclk_efuse"

+Optional properties:
+- rockchip,efuse-size: Should be exact eFuse size in byte, the eFuse
+ size in property <reg> will be invalid if define this property.
+
Deprecated properties:
- compatible: "rockchip,rockchip-efuse"
Old efuse compatible value compatible to rk3066a, rk3188 and rk3288
diff --git a/drivers/nvmem/rockchip-efuse.c b/drivers/nvmem/rockchip-efuse.c
index a0d4ede..8e3e5d0 100644
--- a/drivers/nvmem/rockchip-efuse.c
+++ b/drivers/nvmem/rockchip-efuse.c
@@ -214,7 +214,9 @@ static int rockchip_efuse_probe(struct platform_device *pdev)
return PTR_ERR(efuse->clk);

efuse->dev = &pdev->dev;
- econfig.size = resource_size(res);
+ if (of_property_read_u32(dev->of_node, "rockchip,efuse-size",
+ &econfig.size))
+ econfig.size = resource_size(res);
econfig.reg_read = match->data;
econfig.priv = efuse;
econfig.dev = efuse->dev;
--
2.7.4

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