[PATCH 1/4] ARM: dts: Remove LPC BMC and Host partitions
Chia-Wei, Wang
chiawei_wang at aspeedtech.com
Fri Sep 11 13:46:28 AEST 2020
The LPC controller has no concept of the BMC and the Host partitions.
A concrete instance is that the HICRB[5:4] are for the I/O port address
configurtaion of KCS channel 1/2. However, the KCS driver cannot access
HICRB for channel 1/2 initialization via syscon regmap interface due to
the parition boundary. (i.e. offset 80h)
In addition, to be backward compatible, the newly added HW control bits
could be located at any reserved bits over the LPC addressing space.
Thereby, this patch removes the lpc-bmc and lpc-host child node and thus
the LPC partitioning for better driver development and maintenance.
Signed-off-by: Chia-Wei, Wang <chiawei_wang at aspeedtech.com>
---
arch/arm/boot/dts/aspeed-g4.dtsi | 74 +++++++----------
arch/arm/boot/dts/aspeed-g5.dtsi | 135 ++++++++++++++-----------------
arch/arm/boot/dts/aspeed-g6.dtsi | 135 ++++++++++++++-----------------
3 files changed, 148 insertions(+), 196 deletions(-)
diff --git a/arch/arm/boot/dts/aspeed-g4.dtsi b/arch/arm/boot/dts/aspeed-g4.dtsi
index 82f0213e3a3c..22996b3c4a00 100644
--- a/arch/arm/boot/dts/aspeed-g4.dtsi
+++ b/arch/arm/boot/dts/aspeed-g4.dtsi
@@ -338,58 +338,44 @@
};
lpc: lpc at 1e789000 {
- compatible = "aspeed,ast2400-lpc", "simple-mfd";
+ compatible = "aspeed,ast2400-lpc", "simple-mfd", "syscon";
reg = <0x1e789000 0x1000>;
+ reg-io-width = <4>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0x1e789000 0x1000>;
- lpc_bmc: lpc-bmc at 0 {
- compatible = "aspeed,ast2400-lpc-bmc";
- reg = <0x0 0x80>;
+ lpc_ctrl: lpc-ctrl at 80 {
+ compatible = "aspeed,ast2400-lpc-ctrl";
+ reg = <0x80 0x10>;
+ clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
+ status = "disabled";
};
- lpc_host: lpc-host at 80 {
- compatible = "aspeed,ast2400-lpc-host", "simple-mfd", "syscon";
- reg = <0x80 0x1e0>;
- reg-io-width = <4>;
-
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0x0 0x80 0x1e0>;
-
- lpc_ctrl: lpc-ctrl at 0 {
- compatible = "aspeed,ast2400-lpc-ctrl";
- reg = <0x0 0x10>;
- clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
- status = "disabled";
- };
-
- lpc_snoop: lpc-snoop at 10 {
- compatible = "aspeed,ast2400-lpc-snoop";
- reg = <0x10 0x8>;
- interrupts = <8>;
- status = "disabled";
- };
-
- lhc: lhc at 20 {
- compatible = "aspeed,ast2400-lhc";
- reg = <0x20 0x24 0x48 0x8>;
- };
-
- lpc_reset: reset-controller at 18 {
- compatible = "aspeed,ast2400-lpc-reset";
- reg = <0x18 0x4>;
- #reset-cells = <1>;
- };
-
- ibt: ibt at c0 {
- compatible = "aspeed,ast2400-ibt-bmc";
- reg = <0xc0 0x18>;
- interrupts = <8>;
- status = "disabled";
- };
+ lpc_snoop: lpc-snoop at 90 {
+ compatible = "aspeed,ast2400-lpc-snoop";
+ reg = <0x90 0x8>;
+ interrupts = <8>;
+ status = "disabled";
+ };
+
+ lhc: lhc at a0 {
+ compatible = "aspeed,ast2400-lhc";
+ reg = <0xa0 0x24 0xc8 0x8>;
+ };
+
+ lpc_reset: reset-controller at 98 {
+ compatible = "aspeed,ast2400-lpc-reset";
+ reg = <0x98 0x4>;
+ #reset-cells = <1>;
+ };
+
+ ibt: ibt at 140 {
+ compatible = "aspeed,ast2400-ibt-bmc";
+ reg = <0x140 0x18>;
+ interrupts = <8>;
+ status = "disabled";
};
};
diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi
index 9c91afb2b404..617efa703207 100644
--- a/arch/arm/boot/dts/aspeed-g5.dtsi
+++ b/arch/arm/boot/dts/aspeed-g5.dtsi
@@ -430,90 +430,73 @@
};
lpc: lpc at 1e789000 {
- compatible = "aspeed,ast2500-lpc", "simple-mfd";
+ compatible = "aspeed,ast2500-lpc", "simple-mfd", "syscon";
reg = <0x1e789000 0x1000>;
+ reg-io-width = <4>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0x1e789000 0x1000>;
- lpc_bmc: lpc-bmc at 0 {
- compatible = "aspeed,ast2500-lpc-bmc", "simple-mfd", "syscon";
- reg = <0x0 0x80>;
- reg-io-width = <4>;
-
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0x0 0x0 0x80>;
-
- kcs1: kcs at 24 {
- compatible = "aspeed,ast2500-kcs-bmc-v2";
- reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>;
- interrupts = <8>;
- status = "disabled";
- };
- kcs2: kcs at 28 {
- compatible = "aspeed,ast2500-kcs-bmc-v2";
- reg = <0x28 0x1>, <0x34 0x1>, <0x40 0x1>;
- interrupts = <8>;
- status = "disabled";
- };
- kcs3: kcs at 2c {
- compatible = "aspeed,ast2500-kcs-bmc-v2";
- reg = <0x2c 0x1>, <0x38 0x1>, <0x44 0x1>;
- interrupts = <8>;
- status = "disabled";
- };
+ kcs1: kcs at 24 {
+ compatible = "aspeed,ast2500-kcs-bmc-v2";
+ reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>;
+ interrupts = <8>;
+ status = "disabled";
+ };
+
+ kcs2: kcs at 28 {
+ compatible = "aspeed,ast2500-kcs-bmc-v2";
+ reg = <0x28 0x1>, <0x34 0x1>, <0x40 0x1>;
+ interrupts = <8>;
+ status = "disabled";
+ };
+
+ kcs3: kcs at 2c {
+ compatible = "aspeed,ast2500-kcs-bmc-v2";
+ reg = <0x2c 0x1>, <0x38 0x1>, <0x44 0x1>;
+ interrupts = <8>;
+ status = "disabled";
+ };
+
+ kcs4: kcs at 114 {
+ compatible = "aspeed,ast2500-kcs-bmc-v2";
+ reg = <0x114 0x1>, <0x118 0x1>, <0x11c 0x1>;
+ interrupts = <8>;
+ status = "disabled";
};
- lpc_host: lpc-host at 80 {
- compatible = "aspeed,ast2500-lpc-host", "simple-mfd", "syscon";
- reg = <0x80 0x1e0>;
- reg-io-width = <4>;
-
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0x0 0x80 0x1e0>;
-
- kcs4: kcs at 94 {
- compatible = "aspeed,ast2500-kcs-bmc-v2";
- reg = <0x94 0x1>, <0x98 0x1>, <0x9c 0x1>;
- interrupts = <8>;
- status = "disabled";
- };
-
- lpc_ctrl: lpc-ctrl at 0 {
- compatible = "aspeed,ast2500-lpc-ctrl";
- reg = <0x0 0x10>;
- clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
- status = "disabled";
- };
-
- lpc_snoop: lpc-snoop at 10 {
- compatible = "aspeed,ast2500-lpc-snoop";
- reg = <0x10 0x8>;
- interrupts = <8>;
- status = "disabled";
- };
-
- lpc_reset: reset-controller at 18 {
- compatible = "aspeed,ast2500-lpc-reset";
- reg = <0x18 0x4>;
- #reset-cells = <1>;
- };
-
- lhc: lhc at 20 {
- compatible = "aspeed,ast2500-lhc";
- reg = <0x20 0x24 0x48 0x8>;
- };
-
-
- ibt: ibt at c0 {
- compatible = "aspeed,ast2500-ibt-bmc";
- reg = <0xc0 0x18>;
- interrupts = <8>;
- status = "disabled";
- };
+ lpc_ctrl: lpc-ctrl at 80 {
+ compatible = "aspeed,ast2500-lpc-ctrl";
+ reg = <0x80 0x10>;
+ clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
+ status = "disabled";
+ };
+
+ lpc_snoop: lpc-snoop at 90 {
+ compatible = "aspeed,ast2500-lpc-snoop";
+ reg = <0x90 0x8>;
+ interrupts = <8>;
+ status = "disabled";
+ };
+
+ lpc_reset: reset-controller at 98 {
+ compatible = "aspeed,ast2500-lpc-reset";
+ reg = <0x98 0x4>;
+ #reset-cells = <1>;
+ };
+
+ lhc: lhc at a0 {
+ compatible = "aspeed,ast2500-lhc";
+ reg = <0xa0 0x24 0xc8 0x8>;
+ };
+
+
+ ibt: ibt at 140 {
+ compatible = "aspeed,ast2500-ibt-bmc";
+ reg = <0x140 0x18>;
+ interrupts = <8>;
+ status = "disabled";
};
};
diff --git a/arch/arm/boot/dts/aspeed-g6.dtsi b/arch/arm/boot/dts/aspeed-g6.dtsi
index b58220a49cbd..8dfb5847fc34 100644
--- a/arch/arm/boot/dts/aspeed-g6.dtsi
+++ b/arch/arm/boot/dts/aspeed-g6.dtsi
@@ -449,90 +449,73 @@
};
lpc: lpc at 1e789000 {
- compatible = "aspeed,ast2600-lpc", "simple-mfd";
+ compatible = "aspeed,ast2600-lpc", "simple-mfd", "syscon";
reg = <0x1e789000 0x1000>;
+ reg-io-width = <4>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0x1e789000 0x1000>;
- lpc_bmc: lpc-bmc at 0 {
- compatible = "aspeed,ast2600-lpc-bmc", "simple-mfd", "syscon";
- reg = <0x0 0x80>;
- reg-io-width = <4>;
-
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0x0 0x0 0x80>;
-
- kcs1: kcs at 24 {
- compatible = "aspeed,ast2500-kcs-bmc-v2";
- reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>;
- interrupts = <GIC_SPI 138 IRQ_TYPE_LEVEL_HIGH>;
- kcs_chan = <1>;
- status = "disabled";
- };
- kcs2: kcs at 28 {
- compatible = "aspeed,ast2500-kcs-bmc-v2";
- reg = <0x28 0x1>, <0x34 0x1>, <0x40 0x1>;
- interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_HIGH>;
- status = "disabled";
- };
- kcs3: kcs at 2c {
- compatible = "aspeed,ast2500-kcs-bmc-v2";
- reg = <0x2c 0x1>, <0x38 0x1>, <0x44 0x1>;
- interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
- status = "disabled";
- };
+ kcs1: kcs at 24 {
+ compatible = "aspeed,ast2500-kcs-bmc-v2";
+ reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>;
+ interrupts = <GIC_SPI 138 IRQ_TYPE_LEVEL_HIGH>;
+ kcs_chan = <1>;
+ status = "disabled";
+ };
+
+ kcs2: kcs at 28 {
+ compatible = "aspeed,ast2500-kcs-bmc-v2";
+ reg = <0x28 0x1>, <0x34 0x1>, <0x40 0x1>;
+ interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
+ };
+
+ kcs3: kcs at 2c {
+ compatible = "aspeed,ast2500-kcs-bmc-v2";
+ reg = <0x2c 0x1>, <0x38 0x1>, <0x44 0x1>;
+ interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
+ };
+
+ kcs4: kcs at 114 {
+ compatible = "aspeed,ast2500-kcs-bmc-v2";
+ reg = <0x114 0x1>, <0x118 0x1>, <0x11c 0x1>;
+ interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
+ };
+
+ lpc_ctrl: lpc-ctrl at 80 {
+ compatible = "aspeed,ast2600-lpc-ctrl";
+ reg = <0x80 0x80>;
+ clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
+ status = "disabled";
+ };
+
+ lpc_snoop: lpc-snoop at 80 {
+ compatible = "aspeed,ast2600-lpc-snoop";
+ reg = <0x80 0x80>;
+ interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
};
- lpc_host: lpc-host at 80 {
- compatible = "aspeed,ast2600-lpc-host", "simple-mfd", "syscon";
- reg = <0x80 0x1e0>;
- reg-io-width = <4>;
-
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0x0 0x80 0x1e0>;
-
- kcs4: kcs at 94 {
- compatible = "aspeed,ast2500-kcs-bmc-v2";
- reg = <0x94 0x1>, <0x98 0x1>, <0x9c 0x1>;
- interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>;
- status = "disabled";
- };
-
- lpc_ctrl: lpc-ctrl at 0 {
- compatible = "aspeed,ast2600-lpc-ctrl";
- reg = <0x0 0x80>;
- clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
- status = "disabled";
- };
-
- lpc_snoop: lpc-snoop at 0 {
- compatible = "aspeed,ast2600-lpc-snoop";
- reg = <0x0 0x80>;
- interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
- status = "disabled";
- };
-
- lhc: lhc at 20 {
- compatible = "aspeed,ast2600-lhc";
- reg = <0x20 0x24 0x48 0x8>;
- };
-
- lpc_reset: reset-controller at 18 {
- compatible = "aspeed,ast2600-lpc-reset";
- reg = <0x18 0x4>;
- #reset-cells = <1>;
- };
-
- ibt: ibt at c0 {
- compatible = "aspeed,ast2600-ibt-bmc";
- reg = <0xc0 0x18>;
- interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
- status = "disabled";
- };
+ lhc: lhc at a0 {
+ compatible = "aspeed,ast2600-lhc";
+ reg = <0xa0 0x24 0xc8 0x8>;
+ };
+
+ lpc_reset: reset-controller at 98 {
+ compatible = "aspeed,ast2600-lpc-reset";
+ reg = <0x98 0x4>;
+ #reset-cells = <1>;
+ };
+
+ ibt: ibt at 140 {
+ compatible = "aspeed,ast2600-ibt-bmc";
+ reg = <0x140 0x18>;
+ interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
};
};
--
2.17.1
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