Re: [U-Boot] u-boot device model SPI + SPI Flash

21 Oct 2015

      Hello Jagan,
Thank you for your reply.
Please find my comments bellow. I missed to mention that I am using mainline 2015.07
...
-----Original Message-----
From: Jagan Teki [mailto:jteki@openedev.com]
Sent: Mittwoch, 21. Oktober 2015 18:28
To: Hoefle Marco Marco.Hoefle@nanotronic.ch
Cc: u-boot@lists.denx.de
Subject: Re: [U-Boot] u-boot device model SPI + SPI Flash
On 21 October 2015 at 16:25, Hoefle Marco Marco.Hoefle@nanotronic.ch
wrote:
...
Hello,
I saw that here is also a mailing list dedicated to device model issues but it
looks obsolete (last post February 2014) so I am using this forum.
Please note its driver model - not a device model.
Ok
...
...
I have a problem nearly identically to
http://lists.denx.de/pipermail/u-boot/2015-April/210754.html
The SPI initialization does not work:
Invalid bus 0 (err=-19)
*** Warning - spi_flash_probe() failed, using default environment
Which board it is? dts file name?
It is a custom dts file. It is for a Microblaze CPU in an Artix FPGA. The dts reflects that one below
...
...
This is the device tree compiled into u-boot:
U-Boot> fdt addr 0x8FEB8A7C
U-Boot> fdt print
/ {
        #address-cells = <0x00000001>;
        #size-cells = <0x00000001>;
        aliases {
                serial0 = "serial@40600000";
                spi0 = "/axi_quad_spi@44a00000";
        };
        memory {
                device_type = "memory";
                reg = <0x80000000 0x10000000>;
        };
        axi_quad_spi@44a00000 {
                compatible = "xlnx,xps-spi-2.00.a";
Do you need zynq spi or qspi driver there is no compatible string with
"xlnx,xps-spi-2.00.a" do know which source you're using?
This driver is used:
u-boot/drivers/spi/xilinx_spi.c
...
...
            reg = <0x44a00000 0x00010000>;
            spi-max-frequency = <0x423a35c7>;
            #address-cells = <0x00000001>;
            #size-cells = <0x00000000>;
            status = "okay";
            is-dual = <0x00000000>;
            num-cs = <0x00000001>;
            flash@0 {
                    compatible = "n25q128a11";
                    reg = <0x00000000>;
                    spi-tx-bus-width = <0x00000001>;
                    spi-rx-bus-width = <0x00000004>;
                    spi-max-frequency = <0x0d3ed78e>;
                    #address-cells = <0x00000001>;
                    #size-cells = <0x00000001>;
                    partition@qspi-fsbl-uboot {
                            label = "qspi-fsbl-uboot";
                            reg = <0x00000000 0x00100000>;
                    };
                    partition@qspi-linux {
                            label = "qspi-linux";
                            reg = <0x00100000 0x00500000>;
                    };
                    partition@qspi-device-tree {
                            label = "qspi-device-tree";
                            reg = <0x00600000 0x00020000>;
                    };
                    partition@qspi-rootfs {
                            label = "qspi-rootfs";
                            reg = <0x00620000 0x005e0000>;
                    };
                    partition@qspi-bitstream {
                            label = "qspi-bitstream";
                            reg = <0x00c00000 0x00400000>;
                    };
            };
    };

};
Has anybody an idea how to debug this further?
Thanks,
Marco

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Jagan | openedev.