[RFC PATCH v2 4/4] dts: aspeed-g5: Describe VGA, SIO scratch and DAC mux fields
From: Andrew Jeffery <hidden>
Date: 2018-07-11 05:32:34
Also in:
linux-devicetree, lkml, openbmc
Subsystem:
the rest · Maintainer:
Linus Torvalds
The AST2500 has VGA scratch registers that are read-only, SuperIO scratch registers that are a mix of read-only and read-write, and a graphics DAC mux that must be read or configured in the process of booting e.g. an OpenPOWER system. These capabilities do not really have a place in other drivers, so expose them as fields via bmc-misc-ctrl. Signed-off-by: Andrew Jeffery <redacted> --- Since RFC v1: * Rework labels to what is documented in the bindings * Fix an incorrect offset property arch/arm/boot/dts/aspeed-g5.dtsi | 192 +++++++++++++++++++++++++++++++ 1 file changed, 192 insertions(+)
diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi
index 17f2714d18a7..c484ac637328 100644
--- a/arch/arm/boot/dts/aspeed-g5.dtsi
+++ b/arch/arm/boot/dts/aspeed-g5.dtsi@@ -187,6 +187,77 @@ aspeed,external-nodes = <&gfx &lhc>; }; + + field at 2c.16 { + compatible = "bmc-misc-ctrl"; + offset = <0x2c>; + mask = <0x00030000>; + label = "dac-mux"; + }; + + field at 50.0 { + compatible = "bmc-misc-ctrl"; + offset = <0x50>; + mask = <0xffffffff>; + label = "vga0"; + read-only; + }; + + field at 54.0 { + compatible = "bmc-misc-ctrl"; + offset = <0x54>; + mask = <0xffffffff>; + label = "vga1"; + read-only; + }; + + field at 58.0 { + compatible = "bmc-misc-ctrl"; + offset = <0x58>; + mask = <0xffffffff>; + label = "vga2"; + read-only; + }; + + field at 5c.0 { + compatible = "bmc-misc-ctrl"; + offset = <0x5c>; + mask = <0xffffffff>; + label = "vga3"; + read-only; + }; + + field at 60.0 { + compatible = "bmc-misc-ctrl"; + offset = <0x60>; + mask = <0xffffffff>; + label = "vga4"; + read-only; + }; + + field at 64.0 { + compatible = "bmc-misc-ctrl"; + offset = <0x64>; + mask = <0xffffffff>; + label = "vga5"; + read-only; + }; + + field at 68.0 { + compatible = "bmc-misc-ctrl"; + offset = <0x68>; + mask = <0xffffffff>; + label = "vga6"; + read-only; + }; + + field at 6c.0 { + compatible = "bmc-misc-ctrl"; + offset = <0x6c>; + mask = <0xffffffff>; + label = "vga7"; + read-only; + }; }; rng: hwrng at 1e6e2078 {
@@ -343,6 +414,127 @@ #reset-cells = <1>; }; + field at f0.24 { + compatible = "bmc-misc-ctrl"; + offset = <0xf0>; + mask = <0xff000000>; + label = "sio2b"; + }; + + field at f0.16 { + compatible = "bmc-misc-ctrl"; + offset = <0xf0>; + mask = <0x00ff0000>; + label = "sio2a"; + }; + + field at f0.8 { + compatible = "bmc-misc-ctrl"; + offset = <0xf0>; + mask = <0x0000ff00>; + bit-shift = <8>; + label = "sio29"; + }; + + field at f0.0 { + compatible = "bmc-misc-ctrl"; + offset = <0xf0>; + mask = <0x000000ff>; + label = "sio28"; + }; + + field at f4.24 { + compatible = "bmc-misc-ctrl"; + offset = <0xf4>; + mask = <0xff000000>; + label = "sio2f"; + }; + + field at f4.16 { + compatible = "bmc-misc-ctrl"; + offset = <0xf4>; + mask = <0x00ff0000>; + label = "sio2e"; + }; + + field at f4.8 { + compatible = "bmc-misc-ctrl"; + offset = <0xf4>; + mask = <0x0000ff00>; + label = "sio2d"; + }; + + field at f4.0 { + compatible = "bmc-misc-ctrl"; + offset = <0xf4>; + mask = <0x000000ff>; + label = "sio2c"; + }; + + field at f8.24 { + compatible = "bmc-misc-ctrl"; + offset = <0xf8>; + mask = <0xff000000>; + read-only; + label = "sio23"; + }; + + field at f8.16 { + compatible = "bmc-misc-ctrl"; + offset = <0xf8>; + mask = <0x00ff0000>; + read-only; + label = "sio22"; + }; + + field at f8.8 { + compatible = "bmc-misc-ctrl"; + offset = <0xf8>; + mask = <0x0000ff00>; + read-only; + label = "sio21"; + }; + + field at f8.0 { + compatible = "bmc-misc-ctrl"; + offset = <0xf8>; + mask = <0x000000ff>; + read-only; + label = "sio20"; + }; + + field at fc.24 { + compatible = "bmc-misc-ctrl"; + offset = <0xfc>; + mask = <0xff000000>; + read-only; + label = "sio27"; + }; + + field at fc.16 { + compatible = "bmc-misc-ctrl"; + offset = <0xfc>; + mask = <0x00ff0000>; + read-only; + label = "sio26"; + }; + + field at fc.8 { + compatible = "bmc-misc-ctrl"; + offset = <0xfc>; + mask = <0x0000ff00>; + read-only; + label = "sio25"; + }; + + field at fc.0 { + compatible = "bmc-misc-ctrl"; + offset = <0xfc>; + mask = <0x000000ff>; + read-only; + label = "sio24"; + }; + ibt: ibt at c0 { compatible = "aspeed,ast2500-ibt-bmc"; reg = <0xc0 0x18>;
--
2.17.1