On 1.09.2023 16:10, Ziyang Huang wrote: > In pinctrl, the pinconfigs for uart are named "blspX_uartY". > X is the UART ID. Starts from 1. > 1-6 are in BLSP Block 1. > 7-12 are in BLSP Block 2. > Y is the index of mux config. Starts from 0. > > In dts, the serials are also named "blspX_uartY", but with different logic. > X is the BLSP Block ID. Starts from 1. > Y is the uart id inside block. > In "ipq6018.dtsi" and "ipq8074.dtsi", it starts from 1. > But in "ipq5332.dtsi" and "ipq9574.dtsi", it starts from 0. > > +-----------------+-----------------+-------------+-----------------+ > | Block ID | ID inside Block | dts name | pinconfig name | > | (Starts from 1) | (Starts from 1) | | | > +-----------------+-----------------+-------------+-----------------+ > | 1 | 1 | blsp1_uart1 | blsp0_uartY | > | 1 | 2 | blsp1_uart2 | blsp1_uartY | > | 1 | 6 | blsp1_uart6 | blsp5_uartY | > | 2 | 1 | blsp2_uart1 | blsp6_uartY | > | 2 | 6 | blsp2_uart6 | blsp12_uartY | > +-----------------+-----------------+-------------+-----------------+ > > In "ipq5018.dts", "blsp1_uart1" (dts name) is the first serial (confimed > by the address), So its pinconfig should be "blsp0_uart0" (pinconfig name, > use GPIO 20 and 21) or "blsp0_uart1" (pinconfig name, use GPIO 28 and 29). Surely only one pair of wires is connected? Why is there an "OR"? Konrad
