linux-kernel - Re: [PATCH v1 6/6] arm64: dts: meson: a1: add eMMC controller and its pins

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAFBinCC_g6FhzR=PNDsYwT4OZb4uAXAWYGKSe7vSX7_pWM8pNA@mail.gmail.com>
Date:   Sun, 25 Jun 2023 23:11:40 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     Dmitry Rokosov <ddrokosov@...rdevices.ru>
Cc:     neil.armstrong@...aro.org, jbrunet@...libre.com,
        mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, khilman@...libre.com,
        conor+dt@...nel.org, kernel@...rdevices.ru,
        sdfw_system_team@...rdevices.ru, rockosov@...il.com,
        linux-amlogic@...ts.infradead.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Jan Dakinevich <yvdakinevich@...rdevices.ru>
Subject: Re: [PATCH v1 6/6] arm64: dts: meson: a1: add eMMC controller and its pins

On Wed, Jun 7, 2023 at 10:16 PM Dmitry Rokosov <ddrokosov@...rdevices.ru> wrote:
>
> From: Jan Dakinevich <yvdakinevich@...rdevices.ru>
>
> The definition is inspired by a similar one for AXG SoC family.
> 'sdio_pins' and 'sdio_clk_gate_pins' pinctrls are supposed to be used as
> "default" and "clk-gate" in board-specific device trees.
Let's wait for Neil's response on the other patch for the question
about pin mux settings

> 'meson-gx' driver during initialization sets clock to safe low-frequency
> value (400kHz). However, both source clocks ("clkin0" and "clkin1") are
> high-frequency by default, and using of eMMC's internal divider is not
> enough to achieve so low values. To provide low-frequency source,
> reparent "sd_emmc_sel2" clock using 'assigned-clocks' property.
Even if the pinctrl part should be postponed then I think it's worth
adding &sd_emmc