[PATCH 2/3] rockchip: jaguar-rk3588: add PCIe M.2 M-KEY NVMe support

[Quentin Schulz]

From: Quentin Schulz <quentin.schulz at cherry.de>

Jaguar has an M.2 M-KEY slot for NVMes, connected to the PCIe3 4-lane
PHY on RK3588.

CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y is technically not necessary since
it's required only for the M.2 E-KEY slot on the main PCB, but that is
used typically for WiFi+BT modules, or on the mezzanine connector but
the features exposed behind that connector aren't supported in U-Boot
(no DT for it right now). However, if the PHY driver is missing, we get
the following error message:
pcie_dw_rockchip pcie at fe170000: failed to get pcie phy (ret=-19)

and you would need to know which PCIe controller that is before deciding
to ignore it. While after enabling the PHY driver, we are greeted with:
pcie_dw_rockchip pcie at fe170000: PCIe-2 Link Fail
which is a bit more acceptable (to me).

The other option would be to disable the PCIe2 PHYs/controllers in the
DT, which I'm not too fond of.

Signed-off-by: Quentin Schulz <quentin.schulz at cherry.de>
---
 configs/jaguar-rk3588_defconfig | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configs/jaguar-rk3588_defconfig b/configs/jaguar-rk3588_defconfig
index 36bf34d97c8..18006467dde 100644
--- a/configs/jaguar-rk3588_defconfig
+++ b/configs/jaguar-rk3588_defconfig
@@ -13,6 +13,7 @@ CONFIG_TARGET_JAGUAR_RK3588=y
 CONFIG_DEBUG_UART_BASE=0xfeb50000
 CONFIG_DEBUG_UART_CLOCK=24000000
 CONFIG_SYS_LOAD_ADDR=0xc00800
+CONFIG_PCI=y
 CONFIG_DEBUG_UART=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
@@ -40,6 +41,7 @@ CONFIG_CMD_I2C=y
 # CONFIG_CMD_LOADB is not set
 # CONFIG_CMD_LOADS is not set
 CONFIG_CMD_MMC=y
+CONFIG_CMD_PCI=y
 # CONFIG_CMD_SF is not set
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
@@ -88,7 +90,10 @@ CONFIG_PHY_MICREL=y
 CONFIG_PHY_MICREL_KSZ90X1=y
 CONFIG_DWC_ETH_QOS=y
 CONFIG_DWC_ETH_QOS_ROCKCHIP=y
+CONFIG_NVME_PCI=y
+CONFIG_PCIE_DW_ROCKCHIP=y
 CONFIG_PHY_ROCKCHIP_INNO_USB2=y
+CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y
 CONFIG_SPL_PINCTRL=y
 CONFIG_DM_PMIC=y
 CONFIG_PMIC_RK8XX=y

-- 
2.45.2