[PATCH v2 5/5] PCI: spacemit-k1: Add Spacemit K3 PCIe host controller support

[Alex Elder]

On 6/9/26 9:18 AM, Manivannan Sadhasivam wrote:
> On Sun, May 17, 2026 at 09:48:40AM +0800, Inochi Amaoto wrote:
>> The PCIe controller on Spacemit K3 is almost a standard Synopsys
>> DesignWare PCIe IP with extra link and reset control. Unlike
>> the PCIe controller on K1, this controller supports external MSI
>> interrupt controller and can use multiple PHYs at the same time.
>>
>> Add driver to support PCIe controller on Spacemit K3 PCIe.
>>
>> Signed-off-by: Inochi Amaoto <inochiama at gmail.com>
>> ---
>>   drivers/pci/controller/dwc/Kconfig            |   4 +-
>>   drivers/pci/controller/dwc/pcie-spacemit-k1.c | 169 ++++++++++++++++++
>>   2 files changed, 171 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
>> index f2fde13107f2..fae971ecd876 100644
>> --- a/drivers/pci/controller/dwc/Kconfig
>> +++ b/drivers/pci/controller/dwc/Kconfig
>> @@ -439,7 +439,7 @@ config PCIE_SOPHGO_DW
>>   	  Sophgo SoCs.
>>   
>>   config PCIE_SPACEMIT_K1
>> -	tristate "SpacemiT K1 PCIe controller (host mode)"
>> +	tristate "SpacemiT K1/K3 PCIe controller (host mode)"
> 
> Can you just say 'SpacemiT PCIe controller (host mode)"? I believe I asked Alex
> while adding K1 support and he said this driver might not support future IP
> revisions, but here we are.

(Sorry if I said that in error.)  Will this be K1 and K3 only?
If so what you say is fine, but I agree with Mani, if it's going
to also form the basis of K5 (or whatever) just make it "SpacemiT".
And probably change the Kconfig symbol to PCIE_SPACEMIT.

					-Alex

>>   	depends on ARCH_SPACEMIT || COMPILE_TEST
>>   	depends on HAS_IOMEM
>>   	select PCIE_DW_HOST
>> @@ -447,7 +447,7 @@ config PCIE_SPACEMIT_K1
>>   	default ARCH_SPACEMIT
>>   	help
>>   	  Enables support for the DesignWare based PCIe controller in
>> -	  the SpacemiT K1 SoC operating in host mode.  Three controllers
>> +	  the SpacemiT K1/K3 SoC operating in host mode. Three controllers
>>   	  are available on the K1 SoC; the first of these shares a PHY
>>   	  with a USB 3.0 host controller (one or the other can be used).
>>   . . .