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

[neil.armstrong@linaro.org]

Hi,

On 25/06/2023 23:11, Martin Blumenstingl wrote:
> On Wed, Jun 7, 2023 at 10:16 PM Dmitry Rokosov <ddrokosov@sberdevices.ru> wrote:
>>
>> From: Jan Dakinevich <yvdakinevich@sberdevices.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

Yeah it's weird to add HW definition and to not enable them,
so please enable them in the board if you add them in the DTSI.

Neil