Re: [PATCH 1/2] ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator

2020-12-02 Thread Peter Robinson
On Wed, Dec 2, 2020 at 10:08 AM ZHIZHIKIN Andrey wrote: > > Hello Peter, > > > -Original Message- > > From: Peter Robinson > > Sent: Wednesday, December 2, 2020 9:45 AM > > To: ZHIZHIKIN Andrey > > Cc: u-boot@lists.denx.de; sba...@denx.de >

RE: [PATCH 1/2] ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator

2020-12-02 Thread ZHIZHIKIN Andrey
Hello Peter, > -Original Message- > From: Peter Robinson > Sent: Wednesday, December 2, 2020 9:45 AM > To: ZHIZHIKIN Andrey > Cc: u-boot@lists.denx.de; sba...@denx.de > Subject: Re: [PATCH 1/2] ARM: dts: imx8m: increase off-on delay on the SD Vcc > regulator >

Re: [PATCH 1/2] ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator

2020-12-02 Thread Peter Robinson
On Tue, Dec 1, 2020 at 1:31 PM Andrey Zhizhikin wrote: > > Some SD Card controller and power circuitry has increased capacitance, > which keeps the internal logic remains powered after regulator is switch > off. This is generally the case when card is switched to SD104 mode, > where a power cycle

[PATCH 1/2] ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator

2020-12-01 Thread Andrey Zhizhikin
Some SD Card controller and power circuitry has increased capacitance, which keeps the internal logic remains powered after regulator is switch off. This is generally the case when card is switched to SD104 mode, where a power cycle should be performed. In case if the card internal logic remains