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2020-04-16drivers: crypto: rsa_mod_exp: avoid DM_FLAG_PRE_RELOCHeinrich Schuchardt
Function rsa_verify_key() is not called before relocation. So there is no need to load the UCLASS_MOD_EXP drivers before relocation. This avoid a failure to boot for pine64-lts_defconfig with CONFIG_RSA=y. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-04-15watchdog: sp805_wdt: get platform clock from dt fileRayagonda Kokatanur
Get the watchdog platform clock from the DTS file using clk subsystem and use the same for calculating ticks in msec. Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Signed-off-by: Bharat Kumar Reddy Gooty <bharat.gooty@broadcom.com> Reviewed-by: Stefan Roese <sr@denx.de>
2020-04-15watchdog: honour hw_margin_ms DT propertyRasmus Villemoes
Some watchdog devices, e.g. external gpio-triggered ones, must be reset more often than once per second, which means that the current rate-limiting logic in watchdog_reset() fails to keep the board alive. gpio-wdt.txt in the linux source tree defines a "hw_margin_ms" property used to specifiy the maximum time allowed between resetting the device. Allow any watchdog device to specify such a property, and then use a reset period of one quarter of that. We keep the current default of resetting once every 1000ms. Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Reviewed-by: Stefan Roese <sr@denx.de>
2020-04-15watchdog: move initr_watchdog() to wdt-uclass.cRasmus Villemoes
This function is a bit large for an inline function, and for U-Boot proper, it is called via a function pointer anyway (in board_r.c), so cannot be inlined. It will shortly set a global variable to be used by the watchdog_reset() function in wdt-uclass.c, so this also allows making that variable local to wdt-uclass.c. The WATCHDOG_TIMEOUT_SECS define is not used elsewhere. Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Reviewed-by: Stefan Roese <sr@denx.de>
2020-04-14Merge branch 'master' of git://git.denx.de/u-boot-marvellTom Rini
- Misc enhancements to Clearfog, including board variant detection (Joel) - Misc enhancements to Turris Mox, including generalization of the ARMADA37xx DDR size detection (Marek)
2020-04-14arm: mvebu: drivers/ddr: remove redundant assignmentHeinrich Schuchardt
The value of local variable ecc is immediately overwritten. So we can remove the first assignment. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Stefan Roese <sr@denx.de>
2020-04-14ddr: marvell: a38x: Allow boards to specify CK_DELAY parameterChris Packham
For some layouts it is necessary to adjust the CK_DELAY parameter to successfully complete DDR training. Add the ability to specify the CK_DELAY in the mv_ddr_topology_map. Signed-off-by: Chris Packham <judge.packham@gmail.com>
2020-04-13Merge branch 'master' of git://git.denx.de/u-boot-usbTom Rini
2020-04-13Merge branch 'next'Tom Rini
Pull in changes that have been pending in our 'next' branch. This includes: - A large number of CI improvements including moving to gcc-9.2 for all platforms. - amlogic, xilinx, stm32, TI SoC updates - USB and i2c subsystem updtaes - Re-sync Kbuild/etc logic with v4.19 of the Linux kernel. - RSA key handling improvements
2020-04-13drivers: usb: host: Add BRCM xHCI driverRayagonda Kokatanur
Base driver for Broadcom xHCI controllers Signed-off-by: Bharat Kumar Reddy Gooty <bharat.gooty@broadcom.com> Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Signed-off-by: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com>
2020-04-13usb: Migrate to support live DT for some driverKever Yang
Use ofnode_ instead of fdt_ APIs so that the drivers can support live DT. This patch updates usb_get_dr_mode() and usb_get_maximum_speed() to use ofnode as parameter instead of fdt offset. And all the drivers who use these APIs update to use live dt APIs at the same time. Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
2020-04-13usb: ehci-msm: Use dev interface to get device addressKever Yang
Use dev_read_addr_ptr() instead of devfdt_get_addr() so that we can support live DT. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2020-04-13usb: dwc3-of-simple: Drop redundant inclding header fileKever Yang
The fdtdec.h is no use in this file, remove the include code. Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
2020-04-12Merge https://gitlab.denx.de/u-boot/custodians/u-boot-mpc85xxTom Rini
- Fixes DDR initialization failure on PowerPC boards like P3041DS, P4080DS
2020-04-10video: sunxi: Change sunxi_get_mon_desc() to not return NULL for the default ↵Bin Meng
case When building with gcc 9.2.0, the following build warning was seen: drivers/video/sunxi/sunxi_display.c: In function 'video_hw_init': drivers/video/sunxi/sunxi_display.c:1217:2: error: '%s' directive argument is null [-Werror=format-overflow=] Change sunxi_get_mon_desc() to not return NULL for the default case, to fix the compiler warning. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2020-04-10Merge tag 'dm-pull9apr20' of git://git.denx.de/u-boot-dmTom Rini
Fixes segfault in 'dm drivers' command
2020-04-10Revert "mpc85xx: ddr: Always start DDR RAM in Self Refresh mode"Biwen Li
This reverts commit 2a5d5d27edfbdb0e02a7fcf05569f92c02ae44ee. The commit breaks uboot boot (hang in ddr init) on many PowerPC boards like P3041DS, P4080DS Signed-off-by: Biwen Li <biwen.li@nxp.com> Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
2020-04-09dm: dump.c: Refactor dm_dump_drivers printsOvidiu Panait
Refactor the printing sequence in dm_dump_drivers to make it more clear. Signed-off-by: Ovidiu Panait <ovpanait@gmail.com> Cc: Sean Anderson <seanga2@gmail.com> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-04-09dm: dump.c: Fix segfault when entry->of_match is NULLOvidiu Panait
Currently, dm drivers command produces a segfault: => dm drivers Driver Compatible -------------------------------- Segmentation fault (core dumped) This is caused by a NULL pointer dereference of entry->of_match. Add a check to prevent this. Signed-off-by: Ovidiu Panait <ovpanait@gmail.com> Cc: Sean Anderson <seanga2@gmail.com> Cc: Simon Glass <sjg@chromium.org>
2020-04-09usb: Keep async schedule running only across mass storage xfersMarek Vasut
Rather than keeping the asynchronous schedule running always, keep it running only across USB mass storage transfers for now, as it seems that keeping it running all the time interferes with certain control transfers during device enumeration. Note that running the async schedule all the time should not be an issue, especially on EHCI HCD, as that one implements most of the transfers using async schedule. Note that we have usb_disable_asynch(), which however is utterly broken. The usb_disable_asynch() blocks the USB core from doing async transfers by setting a global flag. The async schedule should however be disabled per USB controller. Moreover, setting a global flag does not prevent the controller from using the async schedule, which e.g. the EHCI HCD does. This patch implements additional callback to the controller, which permits it to lock the async schedule and keep it running across multiple transfers. Once the schedule is unlocked, it must also be disabled. This thus prevents the async schedule from running outside of the USB mass storage transfers. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Lukasz Majewski <lukma@denx.de> Cc: Tom Rini <trini@konsulko.com> Tested-by: Tom Rini <trini@konsulko.com> [omap3_beagle, previously failing]
2020-04-09cmd: Add test and fix bugs for dm driversSean Anderson
Add a test for the dm drivers command. Also fix a null pointer dereference revealed by said test. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-04-08Merge tag 'u-boot-amlogic-20200406' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic into next - clk: meson-g12a: missing break - sync all Amlogic DT from Linux v5.6-rc2 - MMC clock fixups - add support for Libre Computer AML-S905D-PC and AML-S912-PC
2020-04-07Merge tag 'xilinx-for-v2020.07' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze into next Xilinx changes for v2020.07 common: - Align ENV_FAT_INTERFACE - Fix MAC address source print log - Improve based autodetection code xilinx: - Enable netconsole Microblaze: - Setup default ENV_OFFSET/ENV_SECT_SIZE Zynq: - Multiple DT updates/fixes - Use DEVICE_TREE environment variable for DTB selection - Switch to single zynq configuration - Enable NOR flash via DM - Minor SPL print removal - Enable i2c mux driver ZynqMP: - Print multiboot register - Enable cache commands in mini mtest - Multiple DT updates/fixes - Fix firmware probing when driver is not enabled - Specify 3rd backup RAM boot mode in SPL - Add SPL support for zcu102 v1.1 and zcu111 revA - Redesign debug uart enabling and psu_init delay - Enable full u-boot run from EL3 - Enable u-boot.itb generation without ATF with U-Boot in EL3 Versal: - Enable distro default - Enable others SPI flashes - Enable systems without DDR Drivers: - Gem: - Flush memory after freeing - Handle mdio bus separately - Watchdog: - Get rid of unused global data pointer - Enable window watchdog timer - Serial: - Change reinitialization logic in zynq serial driver Signed-off-by: Tom Rini <trini@konsulko.com>
2020-04-06serial: zynq: Change uart initialization logicMichal Simek
The commit a673025535ae ("serial: zynq: Initialize uart only before relocation") introduced code which detects relocation which is working for single uart instance. With multiple instances in place there is a need to enable and setup every instance. That's why detect if TX is enabled. If it is then don't initialize uart again. In post probe setbrg is called to setup baudrate but values should be the same. As a side effect of this change is that DECLARE_GLOBAL_DATA_PTR can be removed completely. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-04-06watchdog: versal: Add support for Xilinx window watchdogAshok Reddy Soma
Add support for Xilinx window watchdog, which can be found on Versal platforms. Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com> Reviewed-by: Stefan Roese <sr@denx.de>
2020-04-06firmware: zynqmp: Enable IPI code calling also in EL3Michal Simek
U-Boot proper can still run in EL3 without using firmware interface wired via ATF. For supporting this use case there is a need to check EL level where U-Boot runs and based on that choose the way how to talk to firmware. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-04-06watchdog: cadence: Remove DECLARE_GLOBAL_DATA_PTR from driverMichal Simek
gd is not used in the driver that's why declaration is not needed at all. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-04-06net: zynq-gem: Setup and use mdio base separatelyMichal Simek
Not all IPs have private MDIO bus and MDIO bus should be shared between several IPs. In past one patch tried to implement it (https://lists.denx.de/pipermail/u-boot/2018-February/319285.html) in pretty raw way but it is not the cleanest solution. This patch is just taking the part of that solution to be able to handle it over releases without conflicts. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-04-06nand: raw: zynq: Do not try to probe driver if nand flash is disabledMichal Simek
There is no reason to continue when DT status property indicates that NAND flash is disabled. But that means that NOR flash should be present that's why try it find it out. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2020-04-06nand: raw: Do not free xnand structureMichal Simek
xnand structure is private data structure and it is handled by core and probe shouldn't touch it. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2020-04-06net: zynq_gem: Add cache flush to zynq_gem_free_pktAshok Reddy Soma
Add cache flush to zynq_gem_free_pkt. This is necessary because some net routines would modify this buffer in place. The cache_invalidate in the zynq_gem_recv function would cause the modifications to the buffer to overwrite the DMA from the GEM, if cache coherency is not enabled in the GEM, the next time the buffer is in use. Flushing the cache when the buffer is no longer in use by the net functions ensures that the GEM DMA is going to take place into a clean buffer. Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-04-06clk: meson: reset mmc clock on probeJerome Brunet
On some SoCs, depending on the boot device, the MMC clock block may be left in a weird state by the ROM code, in which no decent clock may be provided. Reset the related register to make sure a sane MMC clock is ready for the controller. Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Anand Moon <linux.amoon@gmail.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2020-04-06mmc: meson-gx: enable input clocksJerome Brunet
Until now, the mmc clock was left in a good enough state by the ROM code to be used by the controller. However on some SoC, if the ROM code finds a bootloader on USB or SPI, it might leave the MMC clock in state the controller cannot work with. Enable the input clocks provided to the mmc controller. While the u-boot mmc controller driver is not doing fancy settings like the Linux, it at least needs to make these clocks are running. Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Reviewed-by: Anand Moon <linux.amoon@gmail.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2020-04-06clk: meson-g12a: missing breakHeinrich Schuchardt
Add missing break for CLKID_PCIE_PLL in switch statement. Reported by CppCheck. Cc: Neil Armstrong <narmstrong@baylibre.com> Fixes: 08e09c263fdf ("clk: meson-g12a: Add PCIE PLL support") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Lukasz Majewski <lukma@denx.de> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2020-04-05clk: socfpga: Read the clock parent's register base in probe functionChee Hong Ang
This commit (82de42fa14682d408da935adfb0f935354c5008f) calls child's ofdata_to_platdata() method before the parent is probed in dm core. This has caused the driver no longer able to get the correct parent clock's register base in the ofdata_to_platdata() method because the parent clocks will only be probed after the child's ofdata_to_platdata(). To resolve this, the clock parent's register base will only be retrieved by the child in probe() method instead of ofdata_to_platdata(). Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com> Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
2020-04-04Merge branch 'master' of git://git.denx.de/u-boot-shTom Rini
- net: sh_eth: Init the hardware before PHY access
2020-04-04Merge https://gitlab.denx.de/u-boot/custodians/u-boot-x86Tom Rini
- verdin-imx8mm board reST documentation update - Intel Edison board ACPI table I2C/USB minor updates - Fix a regression of ns16550 serial driver that breaks Intel Edison
2020-04-04serial: ns16550: Fix ordering of getting base addressBin Meng
Currently the driver gets ns16550 base address in the driver probe() routine, which may potentially break any ns16550 wrapper driver that does additional initialization before calling ns16550_serial_probe(). Things are complicated that we need consider ns16550 devices on both simple-bus and PCI bus. To fix the issue we move the base address assignment for simple-bus ns16550 device back to the ofdata_to_platdata(), and assign base address for PCI ns16550 device in ns16550_serial_probe(). This is still not perfect. If any PCI bus based ns16550 wrapper driver tries to access plat->base before calling probe(), it is still subject to break. Fixes: 720f9e1fdb0c9 ("serial: ns16550: Move PCI access from ofdata_to_platdata() to probe()") Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Tested-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
2020-04-04net: sh_eth: Init the hardware before PHY accessMarek Vasut
To access the PHY, the MAC registers must be initialized. Call the init function in probe() to make it so, otherwise the PHY ID readout returns all zeroes. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Joe Hershberger <joe.hershberger@ni.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2020-04-03Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-tegraTom Rini
- Add support for Jetson Nano, plus miscellaneous other fixes found during Nano bringup. - Add Igor's update_uboot wrapper patches.
2020-04-03Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-spiTom Rini
- fix for MMIO window size (Tudor Ambarus)
2020-04-02mtd: spi: Add Macronix MX25U3235F deviceTom Warren
Add Macronix MX25U3235F flash device description. This is a 4MiB part. Signed-off-by: Tom Warren <twarren@nvidia.com>
2020-04-02qspi: t210: Use dev_read calls to get FDT data like base, freqTom Warren
This Tegra QSPI driver hadn't been brought up to date with how DM drivers are fetching data from the FDT now, and was pulling in bogus data for base, max freq, etc. Fixed ofdata_to_platdata to work the same way it does in the tegra114 SPI driver, using dev_read_ functions. Signed-off-by: Tom Warren <twarren@nvidia.com>
2020-04-02qspi: t210: Fix QSPI clock and tap delaysTom Warren
When claim_bus was setting the clock, it reset the QSPI controller, which wipes out any tap delays set by previous bootloaders (nvtboot, CBoot for example on Nano). Instead of doing that in claim_bus, which gets called a lot, moved clock setting to probe(), and set tap delays there, too. Also updated clock to 80MHz to match CBoot. Now QSPI env save works reliably again. Signed-off-by: Tom Warren <twarren@nvidia.com>
2020-04-02qspi: t210: Fix claim_bus's use of the wrong bus/deviceTom Warren
claim_bus() is passed a udevice *dev, which is the bus device's parent. In this driver, claim_bus assumed it was the bus, which caused the 'priv' info pointer to be wrong, and periph_id was incorrect. This in turn caused the periph clock call to assign the wrong clock (PLLM instead of PLLP0), which caused a kernel warning. I only saw the 'bad' periph_id when enabling DEBUG due to an assert. Not sure how QSPI was working w/this errant clock, but it was moot as QSPI wasn't active unless you probed it, and that wasn't happening until I posted a patch to enable env save to QSPI for Nano (coming soon). Signed-off-by: Tom Warren <twarren@nvidia.com>
2020-04-02mmc: t210: Fix 'bad' SD-card clock when doing 400KHz card detectTom Warren
According to the HW team, for some reason the normal clock select code picks what appears to be a perfectly valid 375KHz SD card clock, based on the CAR clock source and SDMMC1 controller register settings (CAR = 408MHz PLLP0 divided by 68 for 6MHz, then a SD Clock Control register divisor of 16 = 375KHz). But the resulting SD card clock, as measured by the HW team, is 700KHz, which is out-of-spec. So the WAR is to use the values given in the TRM PLLP table to generate a 400KHz SD-clock (CAR clock of 24.7MHz, SD Clock Control divisor of 62) only for SDMMC1 on T210 when the requested clock is <= 400KHz. Note that as far as I can tell, the other requests for clocks in the Tegra MMC driver result in valid SD clocks. Signed-off-by: Tom Warren <twarren@nvidia.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2020-04-02mmc: t210: Add autocal and tap/trim updates for SDMMC1/3Tom Warren
As per the T210 TRM, when running at 3.3v, the SDMMC1 tap/trim and autocal values need to be set to condition the signals correctly before talking to the SD-card. This is the same as what's being done in CBoot, but it gets reset when the SDMMC1 HW is soft-reset during SD driver init, so needs to be repeated here. Also set autocal and tap/trim for SDMMC3, although no T210 boards use it for SD-card at this time. Signed-off-by: Tom Warren <twarren@nvidia.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2020-04-02video: rockchip: Support 4K resolution for rk3399, HDMIJagan Teki
The default resolution for rockchip display is 1920x1080 which failed to work on 4K HDMI out displays on rk3399. So, mark the default resolution as 3480x2160 for rk3399 HDMI out. This would work all the hdmi display resolutions till 4K. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Tested-by: Peter Robinson <pbrobinson@gmail.com>
2020-04-02video: rockchip: Fix vop modes for rk3399Jagan Teki
VOP display endpoint pipeline configuration differs between rk3288 vs rk3399. These VOP pipeline configuration depends on how the different display interfaces connected in sequence to IN and OUT ports like for, RK3288: vopb_out: port { #address-cells = <1>; #size-cells = <0>; vopb_out_edp: endpoint@0 { reg = <0>; remote-endpoint = <&edp_in_vopb>; }; vopb_out_hdmi: endpoint@1 { reg = <1>; remote-endpoint = <&hdmi_in_vopb>; }; vopb_out_lvds: endpoint@2 { reg = <2>; remote-endpoint = <&lvds_in_vopb>; }; vopb_out_mipi: endpoint@3 { reg = <3>; remote-endpoint = <&mipi_in_vopb>; }; }; RK3399: vopb_out: port { #address-cells = <1>; #size-cells = <0>; vopb_out_edp: endpoint@0 { reg = <0>; remote-endpoint = <&edp_in_vopb>; }; vopb_out_mipi: endpoint@1 { reg = <1>; remote-endpoint = <&mipi_in_vopb>; }; vopb_out_hdmi: endpoint@2 { reg = <2>; remote-endpoint = <&hdmi_in_vopb>; }; vopb_out_mipi1: endpoint@3 { reg = <3>; remote-endpoint = <&mipi1_in_vopb>; }; vopb_out_dp: endpoint@4 { reg = <4>; remote-endpoint = <&dp_in_vopb>; }; }; here, HDMI interface has endpoint 1 in rk3288 and 2 in rk3399. The rockchip vop driver often depends on this determined endpoint number and stored in vop_mode. So based on this vop_mode the bpp and pin polarity would configure on detected display interface. Since, the existing driver using rk3288 vop mode settings enabling the same will result wrong display interface configuration for rk3399. Add the patch for fixing these vop modes for rk3399. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Tested-by: Peter Robinson <pbrobinson@gmail.com>
2020-04-02clk: rk3399: Set empty for vopl assigned-clocksJagan Teki
During vidconsole probe, the device probe will try to check whether the assigned clocks on that video console node is initialized or not? and return an error if not. But, unlike Linux U-Boot won't require to handle these vopl assigned-clocks since core clocks are enough to handle the video out to process. So, mark them as empty in set_rate to satisfy clk_set_defaults so-that probe happened properly. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Tested-by: Peter Robinson <pbrobinson@gmail.com>