[PATCH 8/8] rockchip: Enable PCIe/M.2 on rock960 board

Jagan Teki
2020-04-25T11:03:54Z

Due to some on board limitation rock960 PCIe
works only with 1.8V IO domain.

So, this patch enables grf io_sel explicitly
to make PCIe/M.2 to work.

rock960 => pci
Scanning PCI devices on bus 0
BusDevFun VendorId DeviceId Device Class Sub-Class
_____________________________________________________________
00.00.00 0x1d87 0x0100 Bridge device 0x04
rock960 => nvme scan
rock960 => nvme dev

IDE device 0: Vendor: 0x144d Rev: 4L1QCXB7 Prod: S35FNX0J623292
Type: Hard Disk
Capacity: 122104.3 MB = 119.2 GB (250069680 x 512)

Cc: Tom Cubie <tom@radxa.com>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
board/vamrs/rock960_rk3399/rock960-rk3399.c | 20 ++++++++++++++++++++
configs/rock960-rk3399_defconfig | 5 +++++
2 files changed, 25 insertions(+)

diff --git a/board/vamrs/rock960_rk3399/rock960-rk3399.c b/board/vamrs/rock960_rk3399/rock960-rk3399.c
index 68a127b9ac..98d62e89ca 100644
--- a/board/vamrs/rock960_rk3399/rock960-rk3399.c
+++ b/board/vamrs/rock960_rk3399/rock960-rk3399.c
@@ -2,3 +2,23 @@
/*
* Copyright (C) 2018 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
*/
+
+#include <common.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/grf_rk3399.h>
+#include <asm/arch-rockchip/hardware.h>
+
+#ifdef CONFIG_MISC_INIT_R
+int misc_init_r(void)
+{
+ struct rk3399_grf_regs *grf =
+ syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+
+ /* BT565 is in 1.8v domain */
+ rk_setreg(&grf->io_vsel, BIT(0));
+
+ return 0;
+}
+#endif
diff --git a/configs/rock960-rk3399_defconfig b/configs/rock960-rk3399_defconfig
index c4e954731a..cb1ec3c26b 100644
--- a/configs/rock960-rk3399_defconfig
+++ b/configs/rock960-rk3399_defconfig
@@ -9,6 +9,7 @@ CONFIG_DEBUG_UART_BASE=0xFF1A0000
CONFIG_DEBUG_UART_CLOCK=24000000
CONFIG_DEBUG_UART=y
CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-rock960.dtb"
+CONFIG_MISC_INIT_R=y
CONFIG_DISPLAY_BOARDINFO_LATE=y
# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
CONFIG_SPL_STACK_R=y
@@ -19,6 +20,7 @@ CONFIG_CMD_BOOTZ=y
CONFIG_CMD_GPT=y
CONFIG_CMD_MMC=y
CONFIG_CMD_USB=y
+CONFIG_CMD_PCI=y
# CONFIG_CMD_SETEXPR is not set
CONFIG_CMD_TIME=y
CONFIG_CMD_PMIC=y
@@ -36,10 +38,13 @@ CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_SDMA=y
CONFIG_MMC_SDHCI_ROCKCHIP=y
CONFIG_DM_ETH=y
+CONFIG_NVME=y
+CONFIG_PCI=y
CONFIG_PMIC_RK8XX=y
CONFIG_REGULATOR_PWM=y
CONFIG_REGULATOR_RK8XX=y
CONFIG_PWM_ROCKCHIP=y
+CONFIG_DM_RESET=y
CONFIG_BAUDRATE=1500000
CONFIG_DEBUG_UART_SHIFT=2
CONFIG_SYSRESET=y
--
2.17.1