linux-kernel - Re: [PATCH 12/18] arm64: dts: qcom: msm8994-octagon: Configure Lattice iCE40 FPGA

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Message-ID: <20210218134347.GB14087@duo.ucw.cz>
Date:   Thu, 18 Feb 2021 14:43:47 +0100
From:   Pavel Machek <pavel@....cz>
To:     Konrad Dybcio <konrad.dybcio@...ainline.org>
Cc:     phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Gustave Monce <gustave.monce@...look.com>
Subject: Re: [PATCH 12/18] arm64: dts: qcom: msm8994-octagon: Configure
 Lattice iCE40 FPGA

On Sun 2021-01-31 02:38:43, Konrad Dybcio wrote:
> From: Gustave Monce <gustave.monce@...look.com>
> 
> Octagon devices have a Lattice iCE40 FPGA connected over SPI.
> Configure it.

> +	status = "okay";
> +
> +	/*
> +	 * This device is a Lattice UC120 USB-C PD PHY.
> +	 * It is actually a Lattice iCE40 FPGA pre-programmed by
> +	 * the device firmware with a specific bitstream
> +	 * enabling USB Type C PHY functionality.
> +	 * Communication is done via a proprietary protocol over SPI.
> +	 *

Wow. That's interesting hardware design. Someone should put RISC-V CPU
in there!

Best regards,
									Pavel
									
-- 
http://www.livejournal.com/~pavelmachek

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