SPI bus not probed

["Michal Suchánek" <msuchanek@suse.de>]

Hello,

When I enable SPI support I do not get a SPI bus.

Config:
--- a/configs/orangepi_zero_defconfig
+++ b/configs/orangepi_zero_defconfig
@@ -11,3 +11,21 @@ CONFIG_CONSOLE_MUX=y
 CONFIG_SUN8I_EMAC=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_OHCI_HCD=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SPI_FLASH=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_SF_TEST=y
+CONFIG_SPI_FLASH_SFDP_SUPPORT=y
+CONFIG_SPI_FLASH_ATMEL=y
+CONFIG_SPI_FLASH_EON=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_ISSI=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_SST=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_XMC=y
+CONFIG_SPI_FLASH_DATAFLASH=y

DT (which lists the flash types so did not really have to enable them all)
--- a/arch/arm/dts/sun8i-h2-plus-orangepi-zero.dts
+++ b/arch/arm/dts/sun8i-h2-plus-orangepi-zero.dts
@@ -163,10 +163,11 @@
 };
 
 &spi0 {
-       /* Disable SPI NOR by default: it optional on Orange Pi Zero boards */
-       status = "disabled";
+       /* Enable SPI NOR by default: it optional on Orange Pi Zero boards */
+       status = "okay";
 
        flash at 0 {
+            status = "okay";
                #address-cells = <1>;
                #size-cells = <1>;
                compatible = "mxicy,mx25l1606e", "winbond,w25q128";

The guide on debugging says to add dm_dump_all
--- a/drivers/spi/spi-uclass.c
+++ b/drivers/spi/spi-uclass.c
@@ -328,6 +328,7 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode,
        bool created = false;
        int ret;
 
+        dm_dump_all();
 #if CONFIG_IS_ENABLED(OF_PLATDATA)
        ret = uclass_first_device_err(UCLASS_SPI, &bus);
 #else

which prints

 Class     Index  Probed  Driver                Name
-----------------------------------------------------------
 root          0  [ + ]   root_driver           root_driver
 simple_bus    0  [ + ]   simple_bus            |-- soc
 mmc           0  [ + ]   sunxi_mmc             |   |-- mmc at 1c0f000
 blk           0  [   ]   mmc_blk               |   |   `-- mmc at 1c0f000.blk
 mmc           1  [ + ]   sunxi_mmc             |   |-- mmc at 1c10000
 blk           1  [   ]   mmc_blk               |   |   `-- mmc at 1c10000.blk
 phy           0  [   ]   sun4i_usb_phy         |   |-- phy at 1c19400
 usb           0  [   ]   ehci_generic          |   |-- usb at 1c1a000
 usb           1  [   ]   ohci_generic          |   |-- usb at 1c1a400
 usb           2  [   ]   ehci_generic          |   |-- usb at 1c1b000
 usb           3  [   ]   ohci_generic          |   |-- usb at 1c1b400
 clk           0  [ + ]   sun8i_h3_ccu          |   |-- clock at 1c20000
 reset         0  [ + ]   sunxi_reset           |   |   `-- reset
 gpio          0  [ + ]   gpio_sunxi            |   |-- pinctrl at 1c20800
 gpio          1  [ + ]   gpio_sunxi            |   |   |-- PA
 gpio          2  [ + ]   gpio_sunxi            |   |   |-- PB
 gpio          3  [ + ]   gpio_sunxi            |   |   |-- PC
 gpio          4  [ + ]   gpio_sunxi            |   |   |-- PD
 gpio          5  [ + ]   gpio_sunxi            |   |   |-- PE
 gpio          6  [ + ]   gpio_sunxi            |   |   |-- PF
 gpio          7  [ + ]   gpio_sunxi            |   |   |-- PG
 gpio          8  [ + ]   gpio_sunxi            |   |   |-- PH
 gpio          9  [ + ]   gpio_sunxi            |   |   `-- PI
 eth           0  [ + ]   eth_sun8i_emac        |   |-- ethernet at 1c30000
 spi           0  [   ]   sun4i_spi             |   |-- spi at 1c68000
 serial        0  [ + ]   ns16550_serial        |   |-- serial at 1c28000
 gpio         10  [ + ]   gpio_sunxi            |   `-- pinctrl at 1f02c00
 gpio         11  [ + ]   gpio_sunxi            |       `-- PL
 clk           1  [ + ]   fixed_rate_clock      |-- osc24M_clk
 clk           2  [   ]   fixed_rate_clock      `-- osc32k_clk
Invalid bus 0 (err=-19)

-19 means ENODEV according to my /usr/include/asm-generic/errno-base.h

Debug prints added to sunxi driver are never printed:

--- a/drivers/spi/spi-sunxi.c
+++ b/drivers/spi/spi-sunxi.c
@@ -305,6 +305,7 @@ static int sun4i_spi_claim_bus(struct udevice *dev)
 {
        struct sun4i_spi_priv *priv = dev_get_priv(dev->parent);
        int ret;
+       printf("sun4i_spi_claim_bus\n");
 
        ret = sun4i_spi_set_clock(dev->parent, true);
        if (ret)
@@ -487,6 +488,8 @@ static int sun4i_spi_probe(struct udevice *bus)
        struct sun4i_spi_priv *priv = dev_get_priv(bus);
        int ret;
 
+       printf("sun4i_spi_probe\n");
+
        ret = clk_get_by_name(bus, "ahb", &priv->clk_ahb);
        if (ret) {
                dev_err(dev, "failed to get ahb clock\n");

AFAICT the device tree compatible matches the one in the driver.

How do I make u-boot run the driver?

Thanks

Michal