hi ST community
i am new to STM32MP1 and linux
i want to attach external devices to STM32MP146 with FMC
i read a wiki about FMC device tree configruation and
linux/Documentation/devicetree/bindings/memory-controllers/ st,stm32-fmc2-ebi.yaml
i have some questions
there is a description about reg in st,stm32-fmc2-ebi.yaml
" properties:
reg:
description: Bank number, base address and size of the device.
"
what does base address mean ?
does that mean that Bank start address + base address is physical address which is seen at device ?
and the wiki shows example
psram@0,0 {
compatible = "mtd-ram";
reg = <0 0x00000000 0x100000>;
that means psram start CS0's start address + 0x00000000 ?
if i chage 0x00000000 to 0x1000 then is physical start addresss " CS0's start+ 0x10000 " ?
and another question
if reg property has two values such as < 0 0x0000 0x1000 > < 1 0x2000 0x1000 >
does timing values ( ex:st,fmc2-ebi-cs-mux-enable ) be applied to both CS0 and CS1 ?
thank you sincerely
