| Message ID | 20240409181025.55504-2-avkrasnov@salutedevices.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Meson: R/W support for pages used by boot ROM | expand |
Hi Arseniy, avkrasnov@salutedevices.com wrote on Tue, 9 Apr 2024 21:10:24 +0300: > Boot ROM code on Meson requires that some pages on NAND must be written > in special mode: "short" ECC mode where each block is 384 bytes and > scrambling mode is on. Such pages located with the specified interval > within specified offset. Both interval and offset are located in the > device tree and used by driver if 'nand-is-boot-medium' is set for > NAND chip. > > Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com> > --- > .../bindings/mtd/amlogic,meson-nand.yaml | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml > index 57b6957c8415..b86a1953056b 100644 > --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml > +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml > @@ -64,11 +64,25 @@ patternProperties: > items: > maximum: 0 > > + amlogic,boot-page-last: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: > + The NFC driver needs this information to select ECC > + algorithms supported by the boot ROM. Shall we have a length rather than the last page? > + > + amlogic,boot-page-step: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: > + The NFC driver needs this information to select ECC > + algorithms supported by the boot ROM (in pages). > + > unevaluatedProperties: false > > dependencies: > nand-ecc-strength: [nand-ecc-step-size] > nand-ecc-step-size: [nand-ecc-strength] > + amlogic,boot-page-last: [nand-is-boot-medium, "amlogic,boot-page-step"] > + amlogic,boot-page-step: [nand-is-boot-medium, "amlogic,boot-page-last"] > > > required: Thanks, Miquèl
Hi, On 10.04.2024 13:23, Miquel Raynal wrote: > Hi Arseniy, > > avkrasnov@salutedevices.com wrote on Tue, 9 Apr 2024 21:10:24 +0300: > >> Boot ROM code on Meson requires that some pages on NAND must be written >> in special mode: "short" ECC mode where each block is 384 bytes and >> scrambling mode is on. Such pages located with the specified interval >> within specified offset. Both interval and offset are located in the >> device tree and used by driver if 'nand-is-boot-medium' is set for >> NAND chip. >> >> Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com> >> --- >> .../bindings/mtd/amlogic,meson-nand.yaml | 14 ++++++++++++++ >> 1 file changed, 14 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml >> index 57b6957c8415..b86a1953056b 100644 >> --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml >> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml >> @@ -64,11 +64,25 @@ patternProperties: >> items: >> maximum: 0 >> >> + amlogic,boot-page-last: >> + $ref: /schemas/types.yaml#/definitions/uint32 >> + description: >> + The NFC driver needs this information to select ECC >> + algorithms supported by the boot ROM. > > Shall we have a length rather than the last page? You mean rename it to "amlogic,boot-pages-length" or something like that ? But I think length in bytes is useless here: 1) boot rom needs that only some single pages are written in special mode (and as I see in vendor's driver it also works in pages). 2) NAND driver operates in pages during write/read such pages. So length in bytes will be converted to pages anyway. What do You think ? Thanks, Arseniy > >> + >> + amlogic,boot-page-step: >> + $ref: /schemas/types.yaml#/definitions/uint32 >> + description: >> + The NFC driver needs this information to select ECC >> + algorithms supported by the boot ROM (in pages). >> + >> unevaluatedProperties: false >> >> dependencies: >> nand-ecc-strength: [nand-ecc-step-size] >> nand-ecc-step-size: [nand-ecc-strength] >> + amlogic,boot-page-last: [nand-is-boot-medium, "amlogic,boot-page-step"] >> + amlogic,boot-page-step: [nand-is-boot-medium, "amlogic,boot-page-last"] >> >> >> required: > > > Thanks, > Miquèl
On 10.04.2024 18:00, Miquel Raynal wrote: > Hi Arseniy, > > avkrasnov@salutedevices.com wrote on Wed, 10 Apr 2024 17:48:02 +0300: > >> Hi, >> >> On 10.04.2024 13:23, Miquel Raynal wrote: >>> Hi Arseniy, >>> >>> avkrasnov@salutedevices.com wrote on Tue, 9 Apr 2024 21:10:24 +0300: >>> >>>> Boot ROM code on Meson requires that some pages on NAND must be written >>>> in special mode: "short" ECC mode where each block is 384 bytes and >>>> scrambling mode is on. Such pages located with the specified interval >>>> within specified offset. Both interval and offset are located in the >>>> device tree and used by driver if 'nand-is-boot-medium' is set for >>>> NAND chip. >>>> >>>> Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com> >>>> --- >>>> .../bindings/mtd/amlogic,meson-nand.yaml | 14 ++++++++++++++ >>>> 1 file changed, 14 insertions(+) >>>> >>>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml >>>> index 57b6957c8415..b86a1953056b 100644 >>>> --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml >>>> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml >>>> @@ -64,11 +64,25 @@ patternProperties: >>>> items: >>>> maximum: 0 >>>> >>>> + amlogic,boot-page-last: >>>> + $ref: /schemas/types.yaml#/definitions/uint32 >>>> + description: >>>> + The NFC driver needs this information to select ECC >>>> + algorithms supported by the boot ROM. >>> >>> Shall we have a length rather than the last page? >> >> You mean rename it to "amlogic,boot-pages-length" or something like that ? But I think >> length in bytes is useless here: >> 1) boot rom needs that only some single pages are written in special mode (and as I see in >> vendor's driver it also works in pages). >> 2) NAND driver operates in pages during write/read such pages. >> >> So length in bytes will be converted to pages anyway. >> >> What do You think ? > > I didn't talk about units :-) > > Maybe: amlogic,boot-pages would make sense? But pointing at the last > page seems weird. Ah ok I see. Got it! Thanks, Arseniy > > Miquèl
Hi Arseniy, avkrasnov@salutedevices.com wrote on Wed, 10 Apr 2024 17:48:02 +0300: > Hi, > > On 10.04.2024 13:23, Miquel Raynal wrote: > > Hi Arseniy, > > > > avkrasnov@salutedevices.com wrote on Tue, 9 Apr 2024 21:10:24 +0300: > > > >> Boot ROM code on Meson requires that some pages on NAND must be written > >> in special mode: "short" ECC mode where each block is 384 bytes and > >> scrambling mode is on. Such pages located with the specified interval > >> within specified offset. Both interval and offset are located in the > >> device tree and used by driver if 'nand-is-boot-medium' is set for > >> NAND chip. > >> > >> Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com> > >> --- > >> .../bindings/mtd/amlogic,meson-nand.yaml | 14 ++++++++++++++ > >> 1 file changed, 14 insertions(+) > >> > >> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml > >> index 57b6957c8415..b86a1953056b 100644 > >> --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml > >> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml > >> @@ -64,11 +64,25 @@ patternProperties: > >> items: > >> maximum: 0 > >> > >> + amlogic,boot-page-last: > >> + $ref: /schemas/types.yaml#/definitions/uint32 > >> + description: > >> + The NFC driver needs this information to select ECC > >> + algorithms supported by the boot ROM. > > > > Shall we have a length rather than the last page? > > You mean rename it to "amlogic,boot-pages-length" or something like that ? But I think > length in bytes is useless here: > 1) boot rom needs that only some single pages are written in special mode (and as I see in > vendor's driver it also works in pages). > 2) NAND driver operates in pages during write/read such pages. > > So length in bytes will be converted to pages anyway. > > What do You think ? I didn't talk about units :-) Maybe: amlogic,boot-pages would make sense? But pointing at the last page seems weird. Miquèl
diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml index 57b6957c8415..b86a1953056b 100644 --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml @@ -64,11 +64,25 @@ patternProperties: items: maximum: 0 + amlogic,boot-page-last: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The NFC driver needs this information to select ECC + algorithms supported by the boot ROM. + + amlogic,boot-page-step: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The NFC driver needs this information to select ECC + algorithms supported by the boot ROM (in pages). + unevaluatedProperties: false dependencies: nand-ecc-strength: [nand-ecc-step-size] nand-ecc-step-size: [nand-ecc-strength] + amlogic,boot-page-last: [nand-is-boot-medium, "amlogic,boot-page-step"] + amlogic,boot-page-step: [nand-is-boot-medium, "amlogic,boot-page-last"] required:
Boot ROM code on Meson requires that some pages on NAND must be written in special mode: "short" ECC mode where each block is 384 bytes and scrambling mode is on. Such pages located with the specified interval within specified offset. Both interval and offset are located in the device tree and used by driver if 'nand-is-boot-medium' is set for NAND chip. Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com> --- .../bindings/mtd/amlogic,meson-nand.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+)