linux-kernel - Re: [PATCH v5 00/10] ASPEED sgpio driver enhancement.

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Message-ID: <CACRpkdZOStr+K9U9QTkAcsk4NxuSqBRVv_-9_VkGJbT69iSxmQ@mail.gmail.com>
Date:   Wed, 9 Jun 2021 12:54:37 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Steven Lee <steven_lee@...eedtech.com>
Cc:     Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/ASPEED MACHINE SUPPORT" 
        <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/ASPEED MACHINE SUPPORT" 
        <linux-aspeed@...ts.ozlabs.org>,
        open list <linux-kernel@...r.kernel.org>,
        Hongwei Zhang <Hongweiz@....com>,
        Ryan Chen <ryan_chen@...eedtech.com>,
        Billy Tsai <billy_tsai@...eedtech.com>
Subject: Re: [PATCH v5 00/10] ASPEED sgpio driver enhancement.

On Tue, Jun 8, 2021 at 12:26 PM Steven Lee <steven_lee@...eedtech.com> wrote:

> AST2600 SoC has 2 SGPIO master interfaces one with 128 pins another one
> with 80 pins, AST2500/AST2400 SoC has 1 SGPIO master interface that
> supports up to 80 pins.
> In the current driver design, the max number of sgpio pins is hardcoded
> in macro MAX_NR_HW_SGPIO and the value is 80.
>
> For supporting sgpio master interfaces of AST2600 SoC, the patch series
> contains the following enhancement:
> - Convert txt dt-bindings to yaml.
> - Update aspeed-g6 dtsi to support the enhanced sgpio.
> - Define max number of gpio pins in ast2600 platform data. Old chip
>   uses the original hardcoded value.
> - Support muiltiple SGPIO master interfaces.
> - Support up to 128 pins.
> - Support wdt reset tolerance.
> - Fix irq_chip issues which causes multiple sgpio devices use the same
>   irq_chip data.
> - Replace all of_*() APIs with device_*().
>
> Changes from v4:

v5 looks good to me!

I just need Rob's or another DT persons nod on the bindings (or timeout)
before I merge it. Poke me if nothing happens.

>   ARM: dts: aspeed-g6: Add SGPIO node.
>   ARM: dts: aspeed-g5: Remove ngpios from sgpio node.

These two need to be merged through the SoC tree, the rest I will handle.

Yours,
Linus Walleij