On Tue, Jan 3, 2023, at 21:36, nick.hawkins@xxxxxxx wrote:
> From: Nick Hawkins <nick.hawkins@xxxxxxx>
>
> Reorganize the base address of AHB to accommodate the SPI and fan driver
> register requirements. Add the hpe,gxp-spifi and hpe,gxp-fan-ctrl
> compatibles. Add comments to make the register range more clear.
>
> Signed-off-by: Nick Hawkins <nick.hawkins@xxxxxxx>
>
> diff --git a/arch/arm/boot/dts/hpe-gxp.dtsi
> b/arch/arm/boot/dts/hpe-gxp.dtsi
> index cf735b3c4f35..b73b22a93716 100644
> --- a/arch/arm/boot/dts/hpe-gxp.dtsi
> +++ b/arch/arm/boot/dts/hpe-gxp.dtsi
> @@ -1,6 +1,6 @@
> // SPDX-License-Identifier: GPL-2.0
> /*
> - * Device Tree file for HPE GXP
> + * Device Tree for HPE
> */
>
> /dts-v1/;
> @@ -52,76 +52,102 @@
> cache-level = <2>;
> };
>
> - ahb@c0000000 {
> + ahb@80000000 {
> compatible = "simple-bus";
> #address-cells = <1>;
> #size-cells = <1>;
> - ranges = <0x0 0xc0000000 0x30000000>;
> + ranges = <0x0 0x80000000 0xf000000>, /* 0x80000000 - 0x8f000000 */
> + <0x40000000 0xc0000000 0x7fffffff>; /* 0xc0000000 - 0xffffffff */
I'm a bit confused by the change in the mappings: are you
sure this all the same ahb bus and not two separate buses?
The comment for the second range looks wrong to me, as
you define a 2GB (minus one byte) sized mapping but the
comment only lists a 1GB (including the last byte) mapping.
I would expect that the original 0x30000000 (including the
last byte) was correct here.
> - vic1: interrupt-controller@80f00000 {
> + vic1: interrupt-controller@f00000 { /* 0x80f00000 */
This is not the same address as before. I'm also not sure the
comment is helpful here.
Arnd
