From: Soeren Moch <smoch@web.de>
To: Robin Murphy <robin.murphy@arm.com>, Heiko Stuebner <heiko@sntech.de>
Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/3] arm64: dts: rockchip: fix RockPro64 sdmmc settings
Date: Fri, 4 Oct 2019 02:53:26 +0200 [thread overview]
Message-ID: <a8b20c45-0426-ee42-4efc-52e56ea6bb20@web.de> (raw)
In-Reply-To: <31181f3c-20ec-e717-1f7e-8b35cd54d96d@arm.com>
On 04.10.19 02:01, Robin Murphy wrote:
> On 2019-10-03 10:50 pm, Soeren Moch wrote:
>> According to the RockPro64 schematic [1] the rk3399 sdmmc controller is
>> connected to a microSD (TF card) slot, which cannot be switched to 1.8V.
>
> Really? AFAICS the SDMMC0 wiring looks pretty much identical to the
> NanoPC-T4 schematic (it's the same reference design, after all), and I
> know that board can happily drive a UHS-I microSD card with 1.8v I/Os,
> because mine's doing so right now.
>
> Robin.
OK, the RockPro64 does not allow a card reset (power cycle) since
VCC3V0_SD is directly connected to VCC3V3_SYS (via R89555), the
SDMMC0_PWH_H signal is not connected. So the card fails to identify
itself after suspend or reboot when switched to 1.8V operation.
Regards,
Soeren
>
>> So also configure the vcc_sdio regulator, which drives the i/o voltage
>> of the sdmmc controller, accordingly.
>>
>> While at it, also remove the cap-mmc-highspeed property of the sdmmc
>> controller, since no mmc card can be connected here.
>>
>> [1] http://files.pine64.org/doc/rockpro64/rockpro64_v21-SCH.pdf
>>
>> Fixes: e4f3fb490967 ("arm64: dts: rockchip: add initial dts support
>> for Rockpro64")
>> Signed-off-by: Soeren Moch <smoch@web.de>
>> ---
>> Cc: Heiko Stuebner <heiko@sntech.de>
>> Cc: linux-rockchip@lists.infradead.org
>> Cc: linux-arm-kernel@lists.infradead.org
>> Cc: linux-kernel@vger.kernel.org
>> ---
>> arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts | 3 +--
>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
>> b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
>> index 2e44dae4865a..084f1d994a50 100644
>> --- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
>> @@ -353,7 +353,7 @@
>> regulator-name = "vcc_sdio";
>> regulator-always-on;
>> regulator-boot-on;
>> - regulator-min-microvolt = <1800000>;
>> + regulator-min-microvolt = <3000000>;
>> regulator-max-microvolt = <3000000>;
>> regulator-state-mem {
>> regulator-on-in-suspend;
>> @@ -624,7 +624,6 @@
>>
>> &sdmmc {
>> bus-width = <4>;
>> - cap-mmc-highspeed;
>> cap-sd-highspeed;
>> cd-gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
>> disable-wp;
>> --
>> 2.17.1
>>
>>
>> _______________________________________________
>> Linux-rockchip mailing list
>> Linux-rockchip@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-rockchip
>>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-10-04 0:54 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-03 21:50 [PATCH 1/3] arm64: dts: rockchip: fix RockPro64 vdd-log regulator settings Soeren Moch
2019-10-03 21:50 ` [PATCH 2/3] arm64: dts: rockchip: fix RockPro64 sdhci settings Soeren Moch
2019-10-04 20:05 ` Heiko Stuebner
2019-10-03 21:50 ` [PATCH 3/3] arm64: dts: rockchip: fix RockPro64 sdmmc settings Soeren Moch
2019-10-04 0:01 ` Robin Murphy
2019-10-04 0:53 ` Soeren Moch [this message]
2019-10-04 2:13 ` [PATCH 3/3] arm64: dts: rockchip: fix RockPro64 sdmmc settings【请注意,邮件由linux-rockchip-bounces+shawn.lin=rock-chips.com@lists.infradead.org代发】 Shawn Lin
2019-10-04 3:39 ` Soeren Moch
2019-10-04 14:20 ` Robin Murphy
2019-10-04 14:42 ` Jonas Karlman
2019-10-04 15:33 ` Shawn Lin
2019-10-04 17:24 ` Sören Moch
2019-10-04 20:15 ` Soeren Moch
2019-10-04 20:18 ` Heiko Stuebner
2019-10-04 20:39 ` Sören Moch
2019-10-11 8:22 ` Jonas Karlman
2019-10-11 11:40 ` [PATCH 3/3] arm64: dts: rockchip: fix RockPro64 sdmmc settings Soeren Moch
2019-10-11 13:00 ` Robin Murphy
2019-10-11 14:16 ` Soeren Moch
2019-10-12 4:09 ` Shawn Lin
2019-10-12 12:45 ` Soeren Moch
2019-10-04 16:39 ` [PATCH 3/3] arm64: dts: rockchip: fix RockPro64 sdmmc settings【请注意,邮件由linux-rockchip-bounces+shawn.lin=rock-chips.com@lists.infradead.org代发】 Soeren Moch
2019-10-04 20:04 ` [PATCH 1/3] arm64: dts: rockchip: fix RockPro64 vdd-log regulator settings Heiko Stuebner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=a8b20c45-0426-ee42-4efc-52e56ea6bb20@web.de \
--to=smoch@web.de \
--cc=heiko@sntech.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=robin.murphy@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).