linux-kernel - Re: [RFC 5/5] arm64: dts: realtek: rtd139x: Add SB2 sem nodes

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Message-ID: <15898d07-ba67-f790-723d-33b0fe5363c8@suse.de>
Date:   Tue, 3 Dec 2019 00:12:57 +0100
From:   Andreas Färber <afaerber@...e.de>
To:     linux-realtek-soc@...ts.infradead.org,
        Cheng-Yu Lee <cylee12@...ltek.com>,
        James Tai <james.tai@...ltek.com>
Cc:     Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC 5/5] arm64: dts: realtek: rtd139x: Add SB2 sem nodes

Am 02.12.19 um 23:05 schrieb Andreas Färber:
> Add DT nodes to SB2 for hardware semaphores in RTD1395 SoC family.
> 
> Signed-off-by: Andreas Färber <afaerber@...e.de>
> ---
>  arch/arm64/boot/dts/realtek/rtd139x.dtsi | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/realtek/rtd139x.dtsi b/arch/arm64/boot/dts/realtek/rtd139x.dtsi
> index a3c10ceeb586..586b05350274 100644
> --- a/arch/arm64/boot/dts/realtek/rtd139x.dtsi
> +++ b/arch/arm64/boot/dts/realtek/rtd139x.dtsi
> @@ -191,3 +191,17 @@
>  		status = "disabled";
>  	};
>  };
> +
> +&sb2 {
> +	sb2_hd_sem: hwspinlock@0 {
> +		compatible = "realtek,rtd1195-sb2-sem";
> +		reg = <0x0 0x4>;
> +		#hwlock-cells = <0>;
> +	};
> +
> +	sb2_hd_sem_new: hwspinlock@620 {
> +		compatible = "realtek,rtd1195-sb2-sem";
> +		reg = <0x620 0x20>;
> +		#hwlock-cells = <1>;
> +	};

Forgot to mention: These last 8 registers (0x20) are a guess, untested.
@Realtek: Can someone please check whether RTD1395 has the same nine sem
registers as RTD1295?

Similarly, this series is lacking a patch for RTD1619 because - same as
for RTD1295/RTD1395 - BSP DT only shows the first one (cf. coverletter).
Same issue for RTD1319 while at it.

Thanks,
Andreas

> +};

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