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    SubjectRe: [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
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    On 3/23/20 3:58 PM, Christophe Kerello wrote:
    > The driver adds the support for the STMicroelectronics FMC2 EBI controller
    > found on STM32MP SOCs.
    >

    On DH STM32MP1 SoM in PDK2 carrier board,
    Tested-by: Marek Vasut <marex@denx.de>

    btw. it seems this sets BTRx DATLAT and CLKDIV to 0xf , it's "Don't
    care" in the datasheet for Muxed mode, but then it should probably be
    set to 0.

    The bindings I used are below:

    &fmc {
    pinctrl-names = "default", "sleep";
    pinctrl-0 = <&fmc_pins_b>;
    pinctrl-1 = <&fmc_sleep_pins_b>;
    status = "okay";
    #address-cells = <1>;
    #size-cells = <1>;
    /delete-property/interrupts;
    /delete-property/dmas;
    /delete-property/dma-names;
    reg = <0x58002000 0x1000>;
    ranges;

    ebi {
    #address-cells = <2>;
    #size-cells = <1>;
    compatible = "st,stm32mp1-fmc2-ebi";
    ranges = <0 0 0x60000000 0x4000000>,
    <1 0 0x64000000 0x4000000>,
    <2 0 0x68000000 0x4000000>,
    <3 0 0x6c000000 0x4000000>;

    ksz8851: ks8851mll@0,0 {
    compatible = "micrel,ks8851-mll";
    reg = <1 0x0 0x2 1 0x2 0x20000>;
    interrupt-parent = <&gpioc>;
    interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
    bank-width = <2>;

    /* Timing values are in nS */
    st,fmc2_ebi_cs_mux_enable;
    st,fmc2_ebi_cs_transaction_type = <4>;
    st,fmc2_ebi_cs_buswidth = <16>;
    st,fmc2_ebi_cs_address_setup = <6>;
    st,fmc2_ebi_cs_address_hold = <6>;
    st,fmc2_ebi_cs_data_setup = <127>;
    st,fmc2_ebi_cs_bus_turnaround = <9>;
    st,fmc2_ebi_cs_data_hold = <9>;
    };

    sram@3,0 {
    compatible = "mtd-ram";
    reg = <3 0x0 0x80000>;
    bank-width = <2>;

    /* Timing values are in nS */
    st,fmc2_ebi_cs_mux_enable;
    st,fmc2_ebi_cs_transaction_type = <4>;
    st,fmc2_ebi_cs_buswidth = <16>;
    st,fmc2_ebi_cs_address_setup = <6>;
    st,fmc2_ebi_cs_address_hold = <6>;
    st,fmc2_ebi_cs_data_setup = <127>;
    st,fmc2_ebi_cs_bus_turnaround = <9>;
    st,fmc2_ebi_cs_data_hold = <9>;
    };
    };
    };

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