On 8/27/19 2:24 AM, Ivan Mikhaylov wrote:
On Mon, 2019-08-26 at 17:14 -0700, Guenter Roeck wrote:
+/*
+ * At alternate side the 'access_cs0' sysfs node provides:
+ * ast2400: a way to get access to the primary SPI flash chip at CS0
+ *after booting from the alternate chip at CS1.
+
On Mon, 2019-08-26 at 17:14 -0700, Guenter Roeck wrote:
> > +/*
> > + * At alternate side the 'access_cs0' sysfs node provides:
> > + * ast2400: a way to get access to the primary SPI flash chip at CS0
> > + *after booting from the alternate chip at CS1.
> > + * ast2500: a way to re
On 8/26/19 3:46 AM, Ivan Mikhaylov wrote:
Set WDT_CLEAR_TIMEOUT_AND_BOOT_CODE_SELECTION into WDT_CLEAR_TIMEOUT_STATUS
to clear out boot code source and re-enable access to the primary SPI flash
chip while booted via wdt2 from the alternate chip.
AST2400 datasheet says:
"In the 2nd flash booting
Set WDT_CLEAR_TIMEOUT_AND_BOOT_CODE_SELECTION into WDT_CLEAR_TIMEOUT_STATUS
to clear out boot code source and re-enable access to the primary SPI flash
chip while booted via wdt2 from the alternate chip.
AST2400 datasheet says:
"In the 2nd flash booting mode, all the address mapping to CS0# would
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