[PATCH] nvmem: sunxi-sid: add support for A64/H5's SID controller
From: Icenowy Zheng <icenowy@aosc.io>
Date: 2017-09-18 15:42:26
Also in:
linux-arm-kernel, lkml
Subsystem:
nvmem framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Srinivas Kandagatla, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Allwinner A64/H5 SoCs come with a SID controller like the one in H3, but without the silicon bug that makes the initial value at 0x200 wrong, so the value at 0x200 can be directly read. Add support for this kind of SID controller. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> --- Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt | 1 + drivers/nvmem/sunxi_sid.c | 6 ++++++ 2 files changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt b/Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt
index ef06d061913c..6ea0836939ee 100644
--- a/Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt
+++ b/Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt@@ -5,6 +5,7 @@ Required properties: "allwinner,sun4i-a10-sid" "allwinner,sun7i-a20-sid" "allwinner,sun8i-h3-sid" + "allwinner,sun50i-a64-sid" - reg: Should contain registers location and length
diff --git a/drivers/nvmem/sunxi_sid.c b/drivers/nvmem/sunxi_sid.c
index 0d6648be93b8..3c9fd4fb9207 100644
--- a/drivers/nvmem/sunxi_sid.c
+++ b/drivers/nvmem/sunxi_sid.c@@ -199,10 +199,16 @@ static const struct sunxi_sid_cfg sun8i_h3_cfg = { .need_register_readout = true, }; +static const struct sunxi_sid_cfg sun50i_a64_cfg = { + .value_offset = 0x200, + .size = 0x100, +}; + static const struct of_device_id sunxi_sid_of_match[] = { { .compatible = "allwinner,sun4i-a10-sid", .data = &sun4i_a10_cfg }, { .compatible = "allwinner,sun7i-a20-sid", .data = &sun7i_a20_cfg }, { .compatible = "allwinner,sun8i-h3-sid", .data = &sun8i_h3_cfg }, + { .compatible = "allwinner,sun50i-a64-sid", .data = &sun50i_a64_cfg }, {/* sentinel */}, }; MODULE_DEVICE_TABLE(of, sunxi_sid_of_match);
--
2.13.5