On Tue, Feb 27, 2024 at 3:19 PM Adam Ford aford173@gmail.com wrote:
On Mon, Feb 26, 2024 at 2:05 AM Sumit Garg sumit.garg@linaro.org wrote:
pcie_imx doesn't seem to share any useful code for iMX8 SoC and it is tied to quite old port of pcie_designware driver from Linux which suffices only iMX6 specific needs.
But currently we have the common DWC specific bits which alligns pretty well with DW PCIe controller on iMX8MP SoC. So lets reuse those common bits instead as a new driver for iMX8 SoCs. It should be fairly easy to add support for other iMX8 variants to this driver.
iMX8MP SoC also comes up with standalone PCIe PHY support, so hence we can reuse the generic PHY infrastructure to power on PCIe PHY.
Signed-off-by: Sumit Garg sumit.garg@linaro.org
drivers/pci/Kconfig | 8 + drivers/pci/Makefile | 1 + drivers/pci/pcie_dw_imx.c | 314 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 323 insertions(+) create mode 100644 drivers/pci/pcie_dw_imx.c
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index 463ec47eb92d..7edbf35004a9 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -413,4 +413,12 @@ config PCIE_STARFIVE_JH7110 Say Y here if you want to enable PLDA XpressRich PCIe controller support on StarFive JH7110 SoC.
+config PCIE_DW_IMX
bool "i.MX DW PCIe controller support"depends on ARCH_IMX8MI think this also needs to depend on REGMAP to prevent build errors.
Sumit,
both REGMAP and SYSCON are needed to build.
Best Regards,
Tim