Messages in this thread | | | Subject | Re: [PATCH 2/2] ASoC: tlv320adcx140: Wake up codec before accessing register | From | Dan Murphy <> | Date | Tue, 8 Sep 2020 09:58:55 -0500 |
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Camel
On 9/8/20 6:49 AM, Dan Murphy wrote: > Camel > > On 9/8/20 3:35 AM, Camel Guo wrote: >> From: Camel Guo <camelg@axis.com> >> >> According to its datasheet, after reset this codec goes into sleep >> mode. In this mode, any register accessing should be avoided except for >> exiting sleep mode. Hence this commit moves SLEEP_CFG access before any >> register accessing. > > This is interesting because our HW team suggested putting the device > into sleep mode when doing register writes/reads because they were > finding abnormalities in the register settings when the device is active. > > I have a local patch that changes this as well that the HW team > requested.
OK I have clarification on this now. Their original request was incorrect they indicate the BIAS, ADC and PLLs be powered down during writes and reads.
> > Mark > > Let me run this by the HW team first before applying this patch.
Mark
Acked-by: Dan Murphy <dmurphy@ti.com>
> > Dan >
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