[14/14] arm: dts: OpenPower Palmetto system can use coprocessor for FSI

Message ID 20180626232605.13420-15-benh@kernel.crashing.org
State Not Applicable, archived
Headers show
Series
  • fsi: Fixes and Coldfire coprocessor offload
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Commit Message

Benjamin Herrenschmidt June 26, 2018, 11:26 p.m.
This switches away from userspace bitbanging to kernel FSI
using the coprocessor.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/arm/boot/dts/aspeed-bmc-opp-palmetto.dts | 31 ++++++++++++++-----
 1 file changed, 24 insertions(+), 7 deletions(-)

Comments

Joel Stanley June 28, 2018, 4:13 a.m. | #1
On 27 June 2018 at 08:56, Benjamin Herrenschmidt
<benh@kernel.crashing.org> wrote:
> This switches away from userspace bitbanging to kernel FSI
> using the coprocessor.
>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>


As with the other patch, I will take this through the ASPEED SoC tree
once we've got acks on the bindings.

Cheers,

Joel

Patch

diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-palmetto.dts b/arch/arm/boot/dts/aspeed-bmc-opp-palmetto.dts
index e6095f51ecf5..ba49b812e0bd 100644
--- a/arch/arm/boot/dts/aspeed-bmc-opp-palmetto.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-opp-palmetto.dts
@@ -31,6 +31,11 @@ 
 			no-map;
 			reg = <0x98000000 0x01000000>; /* 16MB */
 		};
+
+		coldfire_memory: codefire_memory@5ee00000 {
+			reg = <0x5ee00000 0x00200000>;
+			no-map;
+		};
 	};
 
 	leds {
@@ -49,6 +54,25 @@ 
 		};
 	};
 
+	fsi: gpio-fsi {
+		compatible = "ibm,fsi-master-ast2400-cf", "fsi-master";
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		memory-region = <&coldfire_memory>;
+		sram = <&sram>;
+		cvic = <&cvic>;
+
+		fw-name = "palmetto";
+		fw-platform-sig = <0x5061>;
+
+		clock-gpios = <&gpio ASPEED_GPIO(A, 4) GPIO_ACTIVE_HIGH>;
+		data-gpios = <&gpio ASPEED_GPIO(A, 5) GPIO_ACTIVE_HIGH>;
+		mux-gpios = <&gpio ASPEED_GPIO(A, 6) GPIO_ACTIVE_HIGH>;
+		enable-gpios = <&gpio ASPEED_GPIO(D, 0) GPIO_ACTIVE_HIGH>;
+		trans-gpios = <&gpio ASPEED_GPIO(H, 6) GPIO_ACTIVE_HIGH>;
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 
@@ -323,13 +347,6 @@ 
 		line-name = "SYS_PWROK_BMC";
 	};
 
-	pin_gpio_h6 {
-		gpio-hog;
-		gpios = <ASPEED_GPIO(H, 6) GPIO_ACTIVE_HIGH>;
-		output-high;
-		line-name = "SCM1_FSI0_DATA_EN";
-	};
-
 	pin_gpio_h7 {
 		gpio-hog;
 		gpios = <ASPEED_GPIO(H, 7) GPIO_ACTIVE_HIGH>;