Hi Krzystof On 8/8/22 11:01, Krzysztof Kozlowski wrote: > On 08/08/2022 10:40, patrice.chotard@xxxxxxxxxxx wrote: >> From: Patrice Chotard <patrice.chotard@xxxxxxxxxxx> >> >> Add new property st,dual-flash which allows to use the QSPI interface as a >> communication channel using up to 8 qspi line. >> This mode can only be used if cs-gpios property is defined. >> >> Signed-off-by: Patrice Chotard <patrice.chotard@xxxxxxxxxxx> >> --- >> Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml | 8 ++++++++ >> 1 file changed, 8 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml b/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml >> index 6ec6f556182f..5e4f9109799e 100644 >> --- a/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml >> +++ b/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml >> @@ -46,6 +46,14 @@ properties: >> - const: tx >> - const: rx >> >> + st,dual-flash: >> + type: boolean >> + description: >> + Allows to use 8 data lines in case cs-gpios property is defined. > > It's named dual-flash, but what if you want to use QSPI to connect for > example to FPGA? > > Also how is this related to parallel-memories property? I called it "dual-flash" simply because it enable the dual flash feature of the QSPI block (bit CR_DFM : Dual Flash Mode) which allows to use the 8 lines simultaneously of our dual QSPI block. Best regards Patrice > > Best regards, > Krzysztof
