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Groups > linux.kernel > #1708220
| From | Vignesh R <vigneshr@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 1/7] mtd: spi-nor: cadence-quadspi: add a delay in write sequence |
| Date | 2017-08-10 07:30 +0200 |
| Message-ID | <ucOcF-1a6-5@gated-at.bofh.it> (permalink) |
| References | <u9xrH-79w-3@gated-at.bofh.it> <u9xrI-79w-19@gated-at.bofh.it> <ucJd0-6lV-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thursday 10 August 2017 05:38 AM, Rob Herring wrote: > On Tue, Aug 01, 2017 at 10:24:28AM +0530, Vignesh R wrote: >> As per 66AK2G02 TRM[1] SPRUHY8F section 11.15.5.3 Indirect Access >> Controller programming sequence, a delay equal to couple QSPI master >> clock(~5ns) is required after setting CQSPI_REG_INDIRECTWR_START bit and >> writing data to the flash. Add a new compatible to handle the couple of >> cycles of delay required in the indirect write sequence, since this >> delay is specific to TI 66AK2G SoC. >> >> [1]http://www.ti.com/lit/ug/spruhy8f/spruhy8f.pdf >> >> Signed-off-by: Vignesh R <vigneshr@ti.com> >> --- >> Documentation/devicetree/bindings/mtd/cadence-quadspi.txt | 1 + >> drivers/mtd/spi-nor/cadence-quadspi.c | 13 +++++++++++++ >> 2 files changed, 14 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt b/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt >> index f248056da24c..fdd511a83511 100644 >> --- a/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt >> +++ b/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt >> @@ -2,6 +2,7 @@ >> >> Required properties: >> - compatible : Should be "cdns,qspi-nor". >> + Should be "ti,k2g-qspi" for TI 66AK2G platform. > > Also, this doesn't indicate that "cdns,qspi-nor" is a fallback as you > have in the dts files. Reformat to 1 valid combination per line. > Agreed, will fix it in v2. -- Regards Vignesh
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[PATCH 1/7] mtd: spi-nor: cadence-quadspi: add a delay in write sequence Vignesh R <vigneshr@ti.com> - 2017-08-01 07:00 +0200
Re: [PATCH 1/7] mtd: spi-nor: cadence-quadspi: add a delay in write sequence Rob Herring <robh@kernel.org> - 2017-08-10 02:10 +0200
Re: [PATCH 1/7] mtd: spi-nor: cadence-quadspi: add a delay in write sequence Vignesh R <vigneshr@ti.com> - 2017-08-10 07:30 +0200
Re: [PATCH 1/7] mtd: spi-nor: cadence-quadspi: add a delay in write sequence Rob Herring <robh@kernel.org> - 2017-08-10 02:10 +0200
Re: [PATCH 1/7] mtd: spi-nor: cadence-quadspi: add a delay in write sequence Vignesh R <vigneshr@ti.com> - 2017-08-10 07:30 +0200
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