[PATCH 0/5] Enable I2C in SPL, support runtime detection of add-on board

[PATCH 0/5] Enable I2C in SPL, support runtime detection of add-on board

[sunil at amarulasolutions.com]

From: Suniel Mahesh <sunil@amarulasolutions.com>

This patch series adds runtime detection of add-on board(ROC-RK3399-PC Mezzanine) by
enabling I2C in SPL.
This add on board hosts a CW2015 chip which is connected as slave to I2C2. In order
to dynamically detect this add-on board at runtime, I2C2 is probed in SPL. If probe
is successfull then a corresponding dtb is loaded, else regular dtb is loaded for
the u-boot proper.

Patch #1 moves board initialiation code after rk3399 init is done. Patch #2 enables
I2C in SPL for any add-on board detection at run time. Patch #3 adds support for
add-on board run-time detection. Patch #4 drops ROC-RK3399-PC Mezzanine board as this
is an add-on board, it will be detected at runtime. Patch #5 enables PCIe/M.2 and NVMe,
as this add-on board has a PCIe/M.2.

Jagan Teki (1):
  rockchip: spl: Move board_early_init_f after cpu timer

Suniel Mahesh (4):
  roc-pc-rk3399: Enable I2C in SPL for add-on board detection
  roc-pc-rk3399: Add support for add-on board run-time detection
  rk3399: drop ROC-RK3399-PC Mezzanine board
  roc-pc-rk3399: Enable PCIe/M.2, NVMe

 arch/arm/dts/rk3399-roc-pc-u-boot.dtsi      | 13 +++++
 arch/arm/mach-rockchip/spl.c                |  5 +-
 board/firefly/roc-pc-rk3399/MAINTAINERS     |  2 -
 board/firefly/roc-pc-rk3399/roc-pc-rk3399.c | 56 ++++++++++++++++++++++
 configs/roc-pc-mezzanine-rk3399_defconfig   | 74 -----------------------------
 configs/roc-pc-rk3399_defconfig             | 10 +++-
 6 files changed, 81 insertions(+), 79 deletions(-)
 delete mode 100644 configs/roc-pc-mezzanine-rk3399_defconfig

-- 
2.7.4

[PATCH 1/5] rockchip: spl: Move board_early_init_f after cpu timer

[sunil at amarulasolutions.com]

From: Jagan Teki <jagan@amarulasolutions.com>

Custom board_early_init_f not only deal with simple gpio
configuration but also have a possibility to access clocks
to process any clock related operations like checking reset
cause state and etc.

So, call it once the rockchip timer initialization done instead
of calling first place of board_init_f which doesn't have any
rockchip init code before.

This specific concern was tested with checking reset reason
via board_early_init_f, which indeed require a clk probe.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Suniel Mahesh <sunil@amarulasolutions.com>
---
 arch/arm/mach-rockchip/spl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-rockchip/spl.c b/arch/arm/mach-rockchip/spl.c
index ec2f66d..82586fe 100644
--- a/arch/arm/mach-rockchip/spl.c
+++ b/arch/arm/mach-rockchip/spl.c
@@ -124,8 +124,6 @@ void board_init_f(ulong dummy)
 	debug("\nspl:debug uart enabled in %s\n", __func__);
 #endif
 
-	board_early_init_f();
-
 	ret = spl_early_init();
 	if (ret) {
 		printf("spl_early_init() failed: %d\n", ret);
@@ -139,6 +137,9 @@ void board_init_f(ulong dummy)
 	/* Init ARM arch timer in arch/arm/cpu/armv7/arch_timer.c */
 	timer_init();
 #endif
+
+	board_early_init_f();
+
 #if !defined(CONFIG_TPL) || defined(CONFIG_SPL_OS_BOOT)
 	debug("\nspl:init dram\n");
 	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
-- 
2.7.4

[PATCH 2/5] roc-pc-rk3399: Enable I2C in SPL for add-on board detection

[sunil at amarulasolutions.com]

From: Suniel Mahesh <sunil@amarulasolutions.com>

This patch enables I2C in SPL for any add-on board detection
at run time.

Signed-off-by: Suniel Mahesh <sunil@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 arch/arm/dts/rk3399-roc-pc-u-boot.dtsi | 13 +++++++++++++
 configs/roc-pc-rk3399_defconfig        |  5 ++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi b/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi
index 141dd0b..6de30d4 100644
--- a/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi
+++ b/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi
@@ -56,3 +56,16 @@
 &vcc_sdio {
 	regulator-always-on;
 };
+
+&pcfg_pull_none_12ma {
+	u-boot,dm-pre-reloc;
+};
+
+&i2c2 {
+	u-boot,dm-pre-reloc;
+	status= "okay";
+};
+
+&i2c2_xfer {
+	u-boot,dm-pre-reloc;
+};
diff --git a/configs/roc-pc-rk3399_defconfig b/configs/roc-pc-rk3399_defconfig
index 76e76c1..4d1a077 100644
--- a/configs/roc-pc-rk3399_defconfig
+++ b/configs/roc-pc-rk3399_defconfig
@@ -13,19 +13,22 @@ CONFIG_DISPLAY_BOARDINFO_LATE=y
 # CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
 CONFIG_SPL_STACK_R=y
 CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x10000
+CONFIG_SPL_I2C_SUPPORT=y
 CONFIG_TPL=y
 CONFIG_TPL_GPIO_SUPPORT=y
 CONFIG_CMD_BOOTZ=y
 CONFIG_CMD_GPT=y
+CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_TIME=y
 CONFIG_SPL_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="rk3399-roc-pc"
-CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
+CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_ROCKCHIP_GPIO=y
 CONFIG_SYS_I2C_ROCKCHIP=y
 CONFIG_MISC=y
-- 
2.7.4

[PATCH 3/5] roc-pc-rk3399: Add support for add-on board run-time detection

[sunil at amarulasolutions.com]

From: Suniel Mahesh <sunil@amarulasolutions.com>

roc-pc-rk3399 target has an add-on board, this add-on board hosts
a CW2015 chip which is connected as slave to I2C2. In order to
dynamically detect this add-on board at runtime, I2C2 is probed in
SPL. If probe is successfull then a corresponding dtb is loaded, else
regular dtb is loaded for the u-boot proper.

Signed-off-by: Suniel Mahesh <sunil@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 board/firefly/roc-pc-rk3399/roc-pc-rk3399.c | 56 +++++++++++++++++++++++++++++
 configs/roc-pc-rk3399_defconfig             |  2 ++
 2 files changed, 58 insertions(+)

diff --git a/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c b/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c
index 7c3a803..b3cbfaa 100644
--- a/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c
+++ b/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c
@@ -32,6 +32,62 @@ out:
 }
 #endif
 
+#if !defined(CONFIG_TPL_BUILD) && defined(CONFIG_SPL_BUILD)
+
+#include <i2c.h>
+
+#define BUS_NUM				2
+#define ROC_RK3399_MEZZ_BAT_ADDR	0x62
+
+enum roc_rk3399_pc_board_type {
+       ROC_RK3399_PC,                  /* roc-rk3399-pc base board */
+       ROC_RK3399_MEZZ_M2_POE,         /* roc-rk3399-Mezz M.2 PoE */
+};
+
+int board_early_init_f(void)
+{
+	struct udevice *bus, *dev;
+	int ret;
+
+	/* default board type */
+	gd->board_type = ROC_RK3399_PC;
+
+	ret = uclass_get_device_by_seq(UCLASS_I2C, BUS_NUM, &bus);
+	if (ret) {
+		debug("failed to get i2c bus 2\n");
+		return ret;
+	}
+
+	ret = dm_i2c_probe(bus, ROC_RK3399_MEZZ_BAT_ADDR, 0, &dev);
+	if (ret) {
+		debug("failed to probe i2c2 battery controller IC\n");
+		return ret;
+	}
+
+	gd->board_type = ROC_RK3399_MEZZ_M2_POE;
+
+	return 0;
+}
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+	if (gd->board_type == ROC_RK3399_PC) {
+		if (!strcmp(name, "rk3399-roc-pc.dtb"))
+			return 0;
+	}
+
+	if (gd->board_type == ROC_RK3399_MEZZ_M2_POE) {
+		if (!strcmp(name, "rk3399-roc-pc-mezzanine.dtb"))
+			return 0;
+	}
+
+	return -EINVAL;
+}
+#endif
+
+#endif /* CONFIG_SPL_BUILD */
+
 #if defined(CONFIG_TPL_BUILD)
 
 #define GPIO0_BASE      0xff720000
diff --git a/configs/roc-pc-rk3399_defconfig b/configs/roc-pc-rk3399_defconfig
index 4d1a077..e56fd3d 100644
--- a/configs/roc-pc-rk3399_defconfig
+++ b/configs/roc-pc-rk3399_defconfig
@@ -10,6 +10,7 @@ CONFIG_DEBUG_UART_CLOCK=24000000
 CONFIG_DEBUG_UART=y
 CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-roc-pc.dtb"
 CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_BOARD_TYPES=y
 # CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
 CONFIG_SPL_STACK_R=y
 CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x10000
@@ -25,6 +26,7 @@ CONFIG_CMD_USB=y
 CONFIG_CMD_TIME=y
 CONFIG_SPL_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="rk3399-roc-pc"
+CONFIG_OF_LIST="rk3399-roc-pc rk3399-roc-pc-mezzanine"
 CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
-- 
2.7.4

[PATCH 4/5] rk3399: drop ROC-RK3399-PC Mezzanine board

[sunil at amarulasolutions.com]

From: Suniel Mahesh <sunil@amarulasolutions.com>

As we have added runtime detection support for ROC-RK3399-PC Mezzanine
board, which is an add-on board and as indicated in earlier commit, we
are dropping separate defconfig file and support.

see commit f417d71ea78b ("rk3399: Add ROC-RK3399-PC Mezzanine board")

Signed-off-by: Suniel Mahesh <sunil@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 board/firefly/roc-pc-rk3399/MAINTAINERS   |  2 -
 configs/roc-pc-mezzanine-rk3399_defconfig | 74 -------------------------------
 2 files changed, 76 deletions(-)
 delete mode 100644 configs/roc-pc-mezzanine-rk3399_defconfig

diff --git a/board/firefly/roc-pc-rk3399/MAINTAINERS b/board/firefly/roc-pc-rk3399/MAINTAINERS
index 68a5b75..7564dd2 100644
--- a/board/firefly/roc-pc-rk3399/MAINTAINERS
+++ b/board/firefly/roc-pc-rk3399/MAINTAINERS
@@ -1,8 +1,6 @@
 ROC-RK3399-PC
 M:	Levin Du <djw@t-chip.com.cn>
-M:	Suniel Mahesh <sunil@amarulasolutions.com>
 S:	Maintained
 F:	board/firefly/roc-pc-rk3399
 F:	include/configs/roc-pc-rk3399.h
 F:	configs/roc-pc-rk3399_defconfig
-F:	configs/roc-pc-mezzanine-rk3399_defconfig
diff --git a/configs/roc-pc-mezzanine-rk3399_defconfig b/configs/roc-pc-mezzanine-rk3399_defconfig
deleted file mode 100644
index ff49413..0000000
--- a/configs/roc-pc-mezzanine-rk3399_defconfig
+++ /dev/null
@@ -1,74 +0,0 @@
-CONFIG_ARM=y
-CONFIG_ARCH_ROCKCHIP=y
-CONFIG_SYS_TEXT_BASE=0x00200000
-CONFIG_ENV_OFFSET=0x3F8000
-CONFIG_ROCKCHIP_RK3399=y
-CONFIG_TARGET_ROC_PC_RK3399=y
-CONFIG_NR_DRAM_BANKS=1
-CONFIG_DEBUG_UART_BASE=0xFF1A0000
-CONFIG_DEBUG_UART_CLOCK=24000000
-CONFIG_DEBUG_UART=y
-CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-roc-pc-mezzanine.dtb"
-CONFIG_DISPLAY_BOARDINFO_LATE=y
-# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
-CONFIG_SPL_STACK_R=y
-CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x10000
-CONFIG_TPL=y
-CONFIG_TPL_GPIO_SUPPORT=y
-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_SPL_OF_CONTROL=y
-CONFIG_DEFAULT_DEVICE_TREE="rk3399-roc-pc-mezzanine"
-CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
-CONFIG_ENV_IS_IN_MMC=y
-CONFIG_SYS_RELOC_GD_ENV_ADDR=y
-CONFIG_ROCKCHIP_GPIO=y
-CONFIG_SYS_I2C_ROCKCHIP=y
-CONFIG_MISC=y
-CONFIG_MMC_DW=y
-CONFIG_MMC_DW_ROCKCHIP=y
-CONFIG_MMC_SDHCI=y
-CONFIG_MMC_SDHCI_ROCKCHIP=y
-CONFIG_SPI_FLASH_WINBOND=y
-CONFIG_DM_ETH=y
-CONFIG_ETH_DESIGNWARE=y
-CONFIG_GMAC_ROCKCHIP=y
-CONFIG_NVME=y
-CONFIG_PCI=y
-CONFIG_PHY_ROCKCHIP_INNO_USB2=y
-CONFIG_PHY_ROCKCHIP_TYPEC=y
-CONFIG_PMIC_RK8XX=y
-CONFIG_REGULATOR_PWM=y
-CONFIG_REGULATOR_RK8XX=y
-CONFIG_PWM_ROCKCHIP=y
-CONFIG_RAM_RK3399_LPDDR4=y
-CONFIG_DM_RESET=y
-CONFIG_BAUDRATE=1500000
-CONFIG_DEBUG_UART_SHIFT=2
-CONFIG_ROCKCHIP_SPI=y
-CONFIG_SYSRESET=y
-CONFIG_USB=y
-CONFIG_USB_XHCI_HCD=y
-CONFIG_USB_XHCI_DWC3=y
-CONFIG_USB_EHCI_HCD=y
-CONFIG_USB_EHCI_GENERIC=y
-CONFIG_USB_DWC3=y
-CONFIG_USB_DWC3_GENERIC=y
-CONFIG_USB_KEYBOARD=y
-CONFIG_USB_HOST_ETHER=y
-CONFIG_USB_ETHER_ASIX=y
-CONFIG_USB_ETHER_ASIX88179=y
-CONFIG_USB_ETHER_MCS7830=y
-CONFIG_USB_ETHER_RTL8152=y
-CONFIG_USB_ETHER_SMSC95XX=y
-CONFIG_DM_VIDEO=y
-CONFIG_DISPLAY=y
-CONFIG_VIDEO_ROCKCHIP=y
-CONFIG_DISPLAY_ROCKCHIP_HDMI=y
-CONFIG_SPL_TINY_MEMSET=y
-CONFIG_ERRNO_STR=y
-- 
2.7.4

[PATCH 5/5] roc-pc-rk3399: Enable PCIe/M.2, NVMe

[sunil at amarulasolutions.com]

From: Suniel Mahesh <sunil@amarulasolutions.com>

ROC-RK3399-PC Mezzanine is an add-on board for roc-pc-rk3399 target
and it hosts a PCIe/M.2 interface. As we have added runtime detection
support for this add-on board, this patch enables PCIe/M.2, NVMe so that
SSD's which have a PCIe/M.2 interface can be detected.

=> nvme scan
=> nvme device

IDE device 0: Vendor: 0x144d Rev: 2B2QEXM7 Prod: S4EUNG0N104275H
            Type: Hard Disk
            Capacity: 238475.1 MB = 232.8 GB (488397168 x 512)

Signed-off-by: Suniel Mahesh <sunil@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 configs/roc-pc-rk3399_defconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configs/roc-pc-rk3399_defconfig b/configs/roc-pc-rk3399_defconfig
index e56fd3d..ae08be1 100644
--- a/configs/roc-pc-rk3399_defconfig
+++ b/configs/roc-pc-rk3399_defconfig
@@ -22,6 +22,7 @@ CONFIG_CMD_GPT=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
+CONFIG_CMD_PCI=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_TIME=y
 CONFIG_SPL_OF_CONTROL=y
@@ -42,6 +43,8 @@ CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_DM_ETH=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_GMAC_ROCKCHIP=y
+CONFIG_NVME=y
+CONFIG_PCI=y
 CONFIG_PHY_ROCKCHIP_INNO_USB2=y
 CONFIG_PHY_ROCKCHIP_TYPEC=y
 CONFIG_PMIC_RK8XX=y
-- 
2.7.4

[PATCH 4/5] rk3399: drop ROC-RK3399-PC Mezzanine board

[Jagan Teki]

On Fri, May 22, 2020 at 11:34 PM <sunil@amarulasolutions.com> wrote:
>
> From: Suniel Mahesh <sunil@amarulasolutions.com>
>
> As we have added runtime detection support for ROC-RK3399-PC Mezzanine
> board, which is an add-on board and as indicated in earlier commit, we
> are dropping separate defconfig file and support.
>
> see commit f417d71ea78b ("rk3399: Add ROC-RK3399-PC Mezzanine board")

The commit head can be "rk3399: Drop roc-pc-mezzanine-rk3399 defconfig"

Jagan.

[PATCH 5/5] roc-pc-rk3399: Enable PCIe/M.2, NVMe

[Jagan Teki]

On Fri, May 22, 2020 at 11:34 PM <sunil@amarulasolutions.com> wrote:
>
> From: Suniel Mahesh <sunil@amarulasolutions.com>
>
> ROC-RK3399-PC Mezzanine is an add-on board for roc-pc-rk3399 target
> and it hosts a PCIe/M.2 interface. As we have added runtime detection
> support for this add-on board, this patch enables PCIe/M.2, NVMe so that
> SSD's which have a PCIe/M.2 interface can be detected.
>
> => nvme scan
> => nvme device
>
> IDE device 0: Vendor: 0x144d Rev: 2B2QEXM7 Prod: S4EUNG0N104275H
>             Type: Hard Disk
>             Capacity: 238475.1 MB = 232.8 GB (488397168 x 512)
>
> Signed-off-by: Suniel Mahesh <sunil@amarulasolutions.com>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
>  configs/roc-pc-rk3399_defconfig | 3 +++
>  1 file changed, 3 insertions(+)

We need to squash to 4/5 not be a separate patch since this support
already added.

Jagan.

[PATCH 0/5] Enable I2C in SPL, support runtime detection of add-on board

[Chen-Yu Tsai]

Hi,

On Sat, May 23, 2020 at 2:04 AM <sunil@amarulasolutions.com> wrote:
>
> From: Suniel Mahesh <sunil@amarulasolutions.com>
>
> This patch series adds runtime detection of add-on board(ROC-RK3399-PC Mezzanine) by
> enabling I2C in SPL.
> This add on board hosts a CW2015 chip which is connected as slave to I2C2. In order
> to dynamically detect this add-on board at runtime, I2C2 is probed in SPL. If probe
> is successfull then a corresponding dtb is loaded, else regular dtb is loaded for
> the u-boot proper.
>
> Patch #1 moves board initialiation code after rk3399 init is done. Patch #2 enables
> I2C in SPL for any add-on board detection at run time. Patch #3 adds support for
> add-on board run-time detection. Patch #4 drops ROC-RK3399-PC Mezzanine board as this
> is an add-on board, it will be detected at runtime. Patch #5 enables PCIe/M.2 and NVMe,
> as this add-on board has a PCIe/M.2.
>
> Jagan Teki (1):
>   rockchip: spl: Move board_early_init_f after cpu timer
>
> Suniel Mahesh (4):
>   roc-pc-rk3399: Enable I2C in SPL for add-on board detection
>   roc-pc-rk3399: Add support for add-on board run-time detection
>   rk3399: drop ROC-RK3399-PC Mezzanine board
>   roc-pc-rk3399: Enable PCIe/M.2, NVMe
>
>  arch/arm/dts/rk3399-roc-pc-u-boot.dtsi      | 13 +++++
>  arch/arm/mach-rockchip/spl.c                |  5 +-
>  board/firefly/roc-pc-rk3399/MAINTAINERS     |  2 -
>  board/firefly/roc-pc-rk3399/roc-pc-rk3399.c | 56 ++++++++++++++++++++++
>  configs/roc-pc-mezzanine-rk3399_defconfig   | 74 -----------------------------


FYI this is going to be problematic for people that have the non-POE
version of the
mezzanine board and still want to access NVMe from U-boot. Maybe worth keeping a
target for these people to use.

ChenYu

>  configs/roc-pc-rk3399_defconfig             | 10 +++-
>  6 files changed, 81 insertions(+), 79 deletions(-)
>  delete mode 100644 configs/roc-pc-mezzanine-rk3399_defconfig
>
> --
> 2.7.4
>

[PATCH 0/5] Enable I2C in SPL, support runtime detection of add-on board

[Kever Yang]

Hi Suniel,

 ??? Any idea bout ChenYu's comment?


Thanks,

- Kever

On 2020/5/23 ??10:07, Chen-Yu Tsai wrote:
> Hi,
>
> On Sat, May 23, 2020 at 2:04 AM <sunil@amarulasolutions.com> wrote:
>> From: Suniel Mahesh <sunil@amarulasolutions.com>
>>
>> This patch series adds runtime detection of add-on board(ROC-RK3399-PC Mezzanine) by
>> enabling I2C in SPL.
>> This add on board hosts a CW2015 chip which is connected as slave to I2C2. In order
>> to dynamically detect this add-on board at runtime, I2C2 is probed in SPL. If probe
>> is successfull then a corresponding dtb is loaded, else regular dtb is loaded for
>> the u-boot proper.
>>
>> Patch #1 moves board initialiation code after rk3399 init is done. Patch #2 enables
>> I2C in SPL for any add-on board detection at run time. Patch #3 adds support for
>> add-on board run-time detection. Patch #4 drops ROC-RK3399-PC Mezzanine board as this
>> is an add-on board, it will be detected at runtime. Patch #5 enables PCIe/M.2 and NVMe,
>> as this add-on board has a PCIe/M.2.
>>
>> Jagan Teki (1):
>>    rockchip: spl: Move board_early_init_f after cpu timer
>>
>> Suniel Mahesh (4):
>>    roc-pc-rk3399: Enable I2C in SPL for add-on board detection
>>    roc-pc-rk3399: Add support for add-on board run-time detection
>>    rk3399: drop ROC-RK3399-PC Mezzanine board
>>    roc-pc-rk3399: Enable PCIe/M.2, NVMe
>>
>>   arch/arm/dts/rk3399-roc-pc-u-boot.dtsi      | 13 +++++
>>   arch/arm/mach-rockchip/spl.c                |  5 +-
>>   board/firefly/roc-pc-rk3399/MAINTAINERS     |  2 -
>>   board/firefly/roc-pc-rk3399/roc-pc-rk3399.c | 56 ++++++++++++++++++++++
>>   configs/roc-pc-mezzanine-rk3399_defconfig   | 74 -----------------------------
>
> FYI this is going to be problematic for people that have the non-POE
> version of the
> mezzanine board and still want to access NVMe from U-boot. Maybe worth keeping a
> target for these people to use.
>
> ChenYu
>
>>   configs/roc-pc-rk3399_defconfig             | 10 +++-
>>   6 files changed, 81 insertions(+), 79 deletions(-)
>>   delete mode 100644 configs/roc-pc-mezzanine-rk3399_defconfig
>>
>> --
>> 2.7.4
>>
>

[PATCH 0/5] Enable I2C in SPL, support runtime detection of add-on board

[Jagan Teki]

Hi Kever,

On Fri, May 29, 2020 at 3:25 PM Kever Yang <kever.yang@rock-chips.com> wrote:
>
> Hi Suniel,
>
>      Any idea bout ChenYu's comment?

Yes, ChenYu's point is valid, right now we are in communication with
Libretech about the I/O differences to differentiate baseboard vs
expansion. We will come back with proper solutions.

Jagan.