ppc64: linux5.5 fails to detect SATA controller on pci

[pullmoll]

I compiled linux5.5-5.5.5 for ppc64 and it boots ok. Yet it fails to recognize my SATA controller, JMB363 SATA/IDE controller manufactured by JMicron Technology Corp. pci197b,2363, and thus fails to detect an 1TB SSD attached to it.

I put this extra controller in my G5 because the internal K2 SATA manufactured by Broadcom doesn't work with newer SSDs.

The controller is recognized in linux5.4 so I think some configuration option dealing with the PCI bus may prevent its detection / enumeration.

Here's the lspci output on linux5.4-5.4.21_1:

0001:09:00.0 SATA controller: JMicron Technology Corp. JMB363 SATA/IDE Controller (rev 03) (prog-if 01 [AHCI 1.0])
    Subsystem: JMicron Technology Corp. JMB363 SATA/IDE Controller
    Device tree node: /sys/firmware/devicetree/base/ht@0,f2000000/pci@6/pci197b,2363@0
    Flags: bus master, fast devsel, latency 0, IRQ 62
    Memory at 80100000 (32-bit, non-prefetchable) [size=8K]
    Expansion ROM at 80110000 [disabled] [size=64K]
    Capabilities: [68] Power Management version 2
    Capabilities: [50] Express Legacy Endpoint, MSI 01
    Kernel driver in use: ahci

Any ideas what I could try to change?

[pullmoll]

It seems I found the change. In linux5.4 there were options

CONFIG_PCIE_CADENCE=y
CONFIG_PCIE_CADENCE_HOST=y
CONFIG_PCIE_CADENCE_EP=y

in linux5.5 these were renamed to

CONFIG_PCIE_CADENCE_PLAT_HOST=y
CONFIG_PCIE_CADENCE_PLAT_EP=y

I pushed the modified ppc64-dotconfig file. I not confident whether this should be changed for ppc64le-dotconfig as well, while I believe it should to match the previous configuration. I'll leave that to you @q66.

[q66]

please enable for ppc64le as well, thanks

[pullmoll]

Done.