linux-kernel - Re: [PATCH v3 4/4] clk: bcm: Add BCM63268 timer clock and reset driver

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Message-ID: <896d16997cf3d308eff0cb8ce8596fc3.sboyd@kernel.org>
Date:   Tue, 21 Mar 2023 16:23:51 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Florian Fainelli <f.fainelli@...il.com>,
        devicetree@...r.kernel.org, jonas.gorski@...il.com,
        krzysztof.kozlowski+dt@...aro.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, mturquette@...libre.com,
        p.zabel@...gutronix.de, robh+dt@...nel.org,
        william.zhang@...adcom.com,
        Álvaro Fernández Rojas <noltari@...il.com>
Subject: Re: [PATCH v3 4/4] clk: bcm: Add BCM63268 timer clock and reset driver

Quoting Florian Fainelli (2023-03-21 16:09:54)
> On 3/21/23 16:06, Stephen Boyd wrote:
> > Quoting Florian Fainelli (2023-03-21 16:00:29)
> >>
> >> These SoCs are big-endian, require native endian register access and
> >> have no posted writes within their bus logic (UBUS) and require no
> >> barriers, hence the use of __raw_readl() and __raw_writel() is adequate.
> >>
> > 
> > Use ioread32be() then?
> 
> BCM63xx drivers tend to use __raw_{read,write}l for consistency and to 
> make it clear that no barriers, no endian swapping is necessary, I would 
> prefer to remain consistent with that convention.

Ok.

Is the clk device big-endian? Or the CPU is big-endian? SoC being
big-endian sounds like the devices in the SoC are big-endian. I hope we
never plop this device down with a CPU that's litle-endian.