From: Amit Tomer <amittomer25@gmail.com>
To: "André Przywara" <andre.przywara@arm.com>
Cc: "Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Andreas Färber" <afaerber@suse.de>,
"Rob Herring" <robh+dt@kernel.org>,
cristian.ciocaltea@gmail.com, linux-kernel@vger.kernel.org,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-actions@lists.infradead.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v5 10/10] arm64: dts: actions: Add uSD support for Cubieboard7
Date: Mon, 13 Jul 2020 14:33:54 +0530 [thread overview]
Message-ID: <CABHD4K-4c8DvaW1zt4TsCRHU5YNaWKEgXdT-DK59MT9CgjB87Q@mail.gmail.com> (raw)
In-Reply-To: <5e2eb92e-eada-9b14-3f15-38717284bc92@arm.com>
Hi,
> But this regulator is only used for the eMMC there, which we apparently
> don't have on the Cubieboard 7?
We do have eMMC present on Cubieboard 7 (both the versions of Cubieboard7), and
the regulator name is similar to what is used in
"s900-bubblegum-96.dts" .i.e. "vcc_3v1".
But Since this patch doesn't enable eMMC, it does make sense to remove this
"vcc_3v1" regulator and keep the other one.
> > Also, another day tested it without having these regulators in , and
> > still it seems to
> > work. So should these be removed ?
>
> If there are not even referenced in the .dts, then fixed regulators are
> rather pointless. So yes, please remove this vcc-3v1 one.
Sure, I would do this.
> What is the story with the other regulator? Is there a PMIC or a power
> switch for the SD card? Or is the power supply actually hardwired?
SD_VCC is connected to SWITCH/LDO which gets input from ATM2603C PMIC.
This seems to be enabled by default ( in early bootloaders I guess).
Thanks
-Amit.
WARNING: multiple messages have this Message-ID (diff)
From: Amit Tomer <amittomer25@gmail.com>
To: "André Przywara" <andre.przywara@arm.com>
Cc: devicetree@vger.kernel.org, linux-actions@lists.infradead.org,
linux-kernel@vger.kernel.org, cristian.ciocaltea@gmail.com,
"Rob Herring" <robh+dt@kernel.org>,
"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Andreas Färber" <afaerber@suse.de>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v5 10/10] arm64: dts: actions: Add uSD support for Cubieboard7
Date: Mon, 13 Jul 2020 14:33:54 +0530 [thread overview]
Message-ID: <CABHD4K-4c8DvaW1zt4TsCRHU5YNaWKEgXdT-DK59MT9CgjB87Q@mail.gmail.com> (raw)
In-Reply-To: <5e2eb92e-eada-9b14-3f15-38717284bc92@arm.com>
Hi,
> But this regulator is only used for the eMMC there, which we apparently
> don't have on the Cubieboard 7?
We do have eMMC present on Cubieboard 7 (both the versions of Cubieboard7), and
the regulator name is similar to what is used in
"s900-bubblegum-96.dts" .i.e. "vcc_3v1".
But Since this patch doesn't enable eMMC, it does make sense to remove this
"vcc_3v1" regulator and keep the other one.
> > Also, another day tested it without having these regulators in , and
> > still it seems to
> > work. So should these be removed ?
>
> If there are not even referenced in the .dts, then fixed regulators are
> rather pointless. So yes, please remove this vcc-3v1 one.
Sure, I would do this.
> What is the story with the other regulator? Is there a PMIC or a power
> switch for the SD card? Or is the power supply actually hardwired?
SD_VCC is connected to SWITCH/LDO which gets input from ATM2603C PMIC.
This seems to be enabled by default ( in early bootloaders I guess).
Thanks
-Amit.
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next prev parent reply other threads:[~2020-07-13 9:04 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 14:52 [PATCH v5 00/10] Add MMC and DMA support for Actions S700 Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-02 14:52 ` [PATCH v5 01/10] dt-bindings: dmaengine: convert Actions Semi Owl SoCs bindings to yaml Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-02 21:00 ` Rob Herring
2020-07-02 21:00 ` Rob Herring
2020-07-03 7:18 ` Amit Tomer
2020-07-03 7:18 ` Amit Tomer
2020-07-03 7:54 ` Amit Tomer
2020-07-03 7:54 ` Amit Tomer
2020-07-07 14:31 ` Rob Herring
2020-07-07 14:31 ` Rob Herring
2020-07-02 14:52 ` [PATCH v5 02/10] dmaengine: Actions: get rid of bit fields from dma descriptor Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-12 17:11 ` Manivannan Sadhasivam
2020-07-12 17:11 ` Manivannan Sadhasivam
2020-07-02 14:52 ` [PATCH v5 03/10] dmaengine: Actions: Add support for S700 DMA engine Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-02 22:07 ` kernel test robot
2020-07-02 22:07 ` kernel test robot
2020-07-02 22:07 ` kernel test robot
2020-07-02 14:52 ` [PATCH v5 04/10] clk: actions: Add MMC clock-register reset bits Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-12 17:20 ` Manivannan Sadhasivam
2020-07-12 17:20 ` Manivannan Sadhasivam
2020-07-02 14:52 ` [PATCH v5 05/10] arm64: dts: actions: limit address range for pinctrl node Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-12 17:23 ` Manivannan Sadhasivam
2020-07-12 17:23 ` Manivannan Sadhasivam
2020-07-02 14:52 ` [PATCH v5 06/10] arm64: dts: actions: Add DMA Controller for S700 Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-12 17:24 ` Manivannan Sadhasivam
2020-07-12 17:24 ` Manivannan Sadhasivam
2020-07-02 14:52 ` [PATCH v5 07/10] dt-bindings: reset: s700: Add binding constants for mmc Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-12 17:25 ` Manivannan Sadhasivam
2020-07-12 17:25 ` Manivannan Sadhasivam
2020-07-02 14:52 ` [PATCH v5 08/10] dt-bindings: mmc: owl: add compatible string actions,s700-mmc Amit Singh Tomar
2020-07-02 14:52 ` [PATCH v5 08/10] dt-bindings: mmc: owl: add compatible string actions, s700-mmc Amit Singh Tomar
2020-07-12 17:26 ` [PATCH v5 08/10] dt-bindings: mmc: owl: add compatible string actions,s700-mmc Manivannan Sadhasivam
2020-07-12 17:26 ` Manivannan Sadhasivam
2020-07-02 14:52 ` [PATCH v5 09/10] arm64: dts: actions: Add MMC controller support for S700 Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-12 17:28 ` Manivannan Sadhasivam
2020-07-12 17:28 ` Manivannan Sadhasivam
2020-07-02 14:52 ` [PATCH v5 10/10] arm64: dts: actions: Add uSD support for Cubieboard7 Amit Singh Tomar
2020-07-02 14:52 ` Amit Singh Tomar
2020-07-12 17:30 ` Manivannan Sadhasivam
2020-07-12 17:30 ` Manivannan Sadhasivam
2020-07-12 18:45 ` Amit Tomer
2020-07-12 18:45 ` Amit Tomer
2020-07-12 23:17 ` André Przywara
2020-07-12 23:17 ` André Przywara
2020-07-13 9:03 ` Amit Tomer [this message]
2020-07-13 9:03 ` Amit Tomer
2020-07-13 3:00 ` Manivannan Sadhasivam
2020-07-13 3:00 ` Manivannan Sadhasivam
2020-07-13 9:08 ` Amit Tomer
2020-07-13 9:08 ` Amit Tomer
2020-07-17 14:40 ` Manivannan Sadhasivam
2020-07-17 14:40 ` Manivannan Sadhasivam
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