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AM335x: Missing GPMC_WAIT1 in mux?

Karolis B.
Prodigy 210 points


I am using Linux kernel from AM335x-PSP 04.06.00.10 to connect mcu to dsp via gpmc cs1. I have noticed, that there's no entry for gpmc_wait1 pin in mux335xx.c file. Is it intentional or did I miss something? How do I configure this pin?

  • 0
    TI__Mastermind 25235 points

    Hi,

    I'm not sure why this configuration is not present inside mux33xx.c, but you can add it yourself. The only pin that can be muxed with the gpmc_wait1 signal is GPMC_CLK in MODE2. To add this configuration change the first NULL parameter to gpmc_wait1 in the following _AM335X_MUXENTRY:

        _AM33XX_MUXENTRY(GPMC_CLK, 0,
            "gpmc_clk", "lcd_memory_clk_mux", NULL, "mmc2_clk",
            NULL, NULL, "mcasp0_fsr", "gpio2_1"),

    Best regards,
    Miroslav