The 05/27/2021 09:27, Andrew Jeffery wrote:

Hi Steven,

On Wed, 26 May 2021, at 19:16, Steven Lee wrote:

quoted

AST2600 supports 2 SGPIO master interfaces one with 128 pins another one
with 80 pins.

Is there any chance the serial GPIO controllers can be explicitly 
listed in the Memory Space Allocation Table of the datasheet? Currently 
they're covered by the entry for "GPIO Controller (Parallel GPIO)" 
which is listed as ranging from 0x1e780000-0x1e7807ff.

I've forwarded your suggestion to designers.
Per the discussion with designers, they may change the
GPIO controller description of Memory Space Allocation Table to
"GPIO Controller (including Parallel and Serial GPIO)".

Admittedly the details are listed in chapter 41 for the GPIO 
Controller, but it would be handy to not have to dig.

quoted

Signed-off-by: Steven Lee <redacted>
---
 arch/arm/boot/dts/aspeed-g6.dtsi | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed-g6.dtsi b/arch/arm/boot/dts/aspeed-g6.dtsi
index f96607b7b4e2..556ce9535c22 100644
--- a/arch/arm/boot/dts/aspeed-g6.dtsi
+++ b/arch/arm/boot/dts/aspeed-g6.dtsi

@@ -377,6 +377,38 @@
 				#interrupt-cells = <2>;
 			};
 
+			sgpiom0: sgpiom@1e780500 {
+				#gpio-cells = <2>;
+				gpio-controller;
+				compatible = "aspeed,ast2600-sgpiom";
+				reg = <0x1e780500 0x100>;
+				interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
+				max-ngpios = <128>;

I need to think more about this one.

Andrew

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