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| * | omap3: make SDRC SHARING setting configurableAlbert ARIBAUD \(3ADEV\)2015-01-29-0/+1
| | | | | | | | | | | | Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
| * | ARM: OMAP5: DRA7xx: Add support for power rail groupingLubomir Popov2015-01-29-3/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On the DRA72x (J6Eco) EVM one PMIC SMPS is powering three SoC core rails. This concept of using one SMPS to supply multiple core domains (in various, although limited combinations, per primary device use case) has now become common and is used by many customer J6/J6Eco designs; it is supported by a number of corresponding PMIC OTP versions. This patch implements correct operation of the core voltages scaling routine by ensuring that each SMPS that is supplying more than one domain shall be written only once, and with the highest voltage of those fused in the SoC (or of those defined in the corresponding header if fuse read is disabled or fails) for the power rails belonging to the group. The patch also replaces some PMIC-related magic numbers with the appropriate definitions. The default OPP_NOM voltages for the DRA7xx SoCs are updated as well, per the latest DMs. Signed-off-by: Lubomir Popov <l-popov@ti.com>
* | | Merge branch 'master' of git://git.denx.de/u-boot-sunxiTom Rini2015-02-02-4/+18
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| * | | sunxi: rsb: Move rsb_set_device_mode() call to rsb_init()Hans de Goede2015-02-02-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out that the device_mode_data is rsb specific, rather then slave specific, so integrate the rsb_set_device_mode() call into rsb_init(). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sunxi: rsb: Add sun9i (A80 support)Hans de Goede2015-02-02-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the A80 to the rsb code. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sunxi: Add a GMAC Transmit Clock Delay Chain Kconfig optionHans de Goede2015-02-02-0/+4
| |/ / | | | | | | | | | | | | | | | | | | | | | And use this to set the GMAC Transmit Clock Delay Chain value on Banana boards, rather then keying of CONFIG_TARGET_FOO. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | | exynos5: pinmux: check flag for i2c configPrzemyslaw Marczak2015-01-29-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some versions of Exynos5 supports High-Speed I2C, on few interfaces, this change allows support this. The new flag is: PINMUX_FLAG_HS_MODE Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Cc: Akshay Saraswat <akshay.s@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
* | | dm: mmc: Remove use of fdtdec GPIO supportSimon Glass2015-01-29-3/+4
| | | | | | | | | | | | | | | | | | These functions are going away, so use the new uclass support instead. Signed-off-by: Simon Glass <sjg@chromium.org>
* | | dm: zynq: Remove inline gpio functionsSimon Glass2015-01-29-15/+0
| | | | | | | | | | | | | | | | | | | | | These functions serve no useful purpose, and conflict with the generic API. Drop them. Signed-off-by: Simon Glass <sjg@chromium.org>
* | | dm: tegra: video: Remove use of fdtdec GPIO supportSimon Glass2015-01-29-4/+5
|/ / | | | | | | | | | | These functions are going away, so use the new uclass support instead. Signed-off-by: Simon Glass <sjg@chromium.org>
* | Merge branch 'master' of git://git.denx.de/u-boot-atmelTom Rini2015-01-26-1/+1
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| * | ARM: atmel: sama5d4: add usb platform dataBo Shen2015-01-19-1/+1
| |/ | | | | | | | | | | The SAMA5D4 has the same usb platform data with SAMA5D3 SoC. Signed-off-by: Bo Shen <voice.shen@atmel.com>
* | Merge branch 'zynq' of git://www.denx.de/git/u-boot-microblazeTom Rini2015-01-26-0/+5
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| * | ARM: zynq: List qspi, smc and nand baseaddressesMichal Simek2015-01-26-0/+3
| | | | | | | | | | | | | | | | | | Add missing addresses to the list. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| * | ARM: zynq: List nand, qspi and jtag boot modesMichal Simek2015-01-26-0/+2
| | | | | | | | | | | | | | | | | | Use full boot mode list in SPL. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* | | ls102xa: fdt: Disable QSPI and DSPI in NOR/NAND/SD bootAlison Wang2015-01-23-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As QSPI/DSPI and IFC are pin multiplexed, QSPI and DSPI are only enabled in QSPI boot, and disabled in other boot modes. IFC is enabled in NOR/NAND/SD boot, and disabled in QSPI boot. This patch will add fdt support for the above rules. Signed-off-by: Alison Wang <alison.wang@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* | | arm: ls102xa: Update snoop settings for CCI-400Alison Wang2015-01-23-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CAAM is connected to CCI-400 S0 slave interface. Disable snooping for S0 will cause CAAM self test failure. This patch is to enable snooping for S0 slave interface. These CCI-400 operations are moved to board_early_init_f() to be initialized earlier. For S4 slave interface, issuing of snoop requests and DVM message requests are enabled. Signed-off-by: Alison Wang <alison.wang@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* | | arm: ls102xa: Add dummy gpio.h to enable CONFIG_OF_CONTROLRuchika Gupta2015-01-23-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If CONFIG_OF_CONTROL is enabled, lib/fdtdec.c is compiled. It includes <asm/gpio.h> and then <asm/gpio.h> includes <asm/arch/gpio.h>. As a result, all the SoCs that enable CONFIG_OF_CONTROL must have <asm/arch/gpio.h> even if they do not support GPIO. The right fix would be to split the lib/fdtdec.c to remove dependency on GPIO.This commit adds a dummy <asm/arch/gpio.h> to support OF_CONTROL for LS102x platform. This dummy header will be removed after FDT-GPIO stuff is fixed correctly. Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* | | ls102xa: etsec: Select ge0_clk125 for eTSEC clock muxing as defaultAlison Wang2015-01-23-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch reverts to use ge0_clk125 for eTSEC clock muxing. For SAI and CAN which are pin multiplexed with RGMII1 in EC1 of RCW, ge2_clk125 will be used via hwconfig. Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com> Signed-off-by: Alison Wang <alison.wang@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* | | arm/ls1021a: Add workaround for DDR erratum A008378York Sun2015-01-23-0/+1
| | | | | | | | | | | | | | | | | | | | | Internal memory controller counters can reach a bad state after training in DDR4 mode if accumulated ECC or DBI mode is eanbled. Signed-off-by: York Sun <yorksun@freescale.com>
* | | Merge branch 'master' of http://git.denx.de/u-boot-sunxiTom Rini2015-01-23-153/+550
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| * | | sunxi: Hookup OTG USB controller supportHans de Goede2015-01-22-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hookup OTG USB controller support and enable the otg controller + USB-keyb on various tablets. This allows tablet owners to interact with u-boot without needing to solder a serial console onto their tablet PCB. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sunxi: video: Use frontend for dma on sun4i to fix memory bandwidth problemsHans de Goede2015-01-22-0/+120
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Testing has shown that on sun4i the display backend engine does not have deep enough fifo-s causing flickering / tearing in full-hd mode due to fifo underruns. On sun4i use the display frontend engine to do the dma from memory, as the frontend does have deep enough fifo-s. As added advantage of this is that it results in much better memory bandwidth as it reduces the amount of dram bank switches, for more details see: http://ssvb.github.io/2014/11/11/revisiting-fullhd-x11-desktop-performance-of-the-allwinner-a10.html Note that this changes the pipeline searched for in the simplefb node, we can get away with doing this now, since no kernel has yet shipped with simplefb dtb nodes, and I will make sure to get a simplefb node with the new pipeline into 3.19 before it ships. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sunxi: Stop differentiating between 512M and 1G variants of the same boardHans de Goede2015-01-22-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While working on adding more boards I noticed that we lack a config for the 512M cubieboard, and that some of the new boards which I want to add also have 512M and 1G variants, rather then adding 2 defconfig's for all of these, lets switch the exising boards which have both a 512M and 1024M variant over to the sun4i dram autoconfig code. This also drops the foo_RAMSIZE_defconfig variants of boards where we currently have 2 separate configs already. Note: 1) The newly introduced CONFIG_DRAM_EMR1 kconfig value is not used with a value other then its default for now, but we need this to be configurable to support some new boards with auto dram config. 2) We always set all CONFIG_DRAM_foo values in defconfigs, even if they match the defaults, this is done to make it more clear what values are used for a certain board. This has been tested on a Mele A1000, Mini-X and a Cubieboard, all 1G variants, the dram autoconfig code has also been tested on a 512M mk802 (a defconfig for the mk802 is added in a later patch). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sunxi: mmc: Add support for sun9i (A80)Hans de Goede2015-01-22-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The clocks on the A80 are hooked up slightly different, add support for this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sun9i: Add clock_sun9i.h with ccu register layout for sun9iHans de Goede2015-01-22-0/+141
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a headerfile with the sun9i ccu register layout. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sun9i: Add cpu_sun9i.h with iomem definesHans de Goede2015-01-22-0/+112
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a headerfile with all the base addresses from the sun9i blocks. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sunxi: Rename cpu.h to cpu_sun4i.hHans de Goede2015-01-22-145/+157
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sun4i - sun8i have (aprox.) the same iomem layout, but sun9i is quite different, so add a wrapper cpu.h which includes the right mach specific cpu_sun#i.h based on mach, like we already do with clock.h and dram.h . Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sunxi: Move clock_get_pllX / clock_set_pllX protos to mach specific headersHans de Goede2015-01-22-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Which pll-s are available depends on the machine type, move the clock_get_pllX / clock_set_pllX prototypes to the clock_sun?i.h header files so that we only declare what is actually available. e.g. clock_get_pll5p() is not available on sun6i / sun8i, and with sun9i we get a completely different set of plls. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | sunxi: display: Make lcd display clk phase configurableHans de Goede2015-01-22-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While running some tests with an Olinuxino-A13-Micro + a 7" Olimex LCD module I noticed that the screen flickered. This is caused by the lcd display clk phase reg value being set to 0, where it should be 1 in this setup. This commit adds a Kconfig option for the lcd display clk phase, so that we can set it per board. This defaults to 1, because looking at all the fex files in sunxi-boards, that is by far the most used value. This commit updated the Ippo and MSI Primo73 tablet defconfigs to override the default of 1 with 0, as that is the correct value for those tablets, this keeps the register settings the same as before this commit. The Olinuxino-A13 defconfigs are not updated, changing the register setting for these boards from 0 to 1, this is intentional. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | | | Merge branch 'master' of git://git.denx.de/u-boot-uniphierTom Rini2015-01-22-33/+78
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| * | | | ARM: UniPhier: add SG_MEMCONF macros for DDR channel 2Masahiro Yamada2015-01-23-0/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PH1-sLD3, PH1-LD6b have DDR channel 2. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
| * | | | ARM: UniPhier: rename SG_MEMCONF_* macros for readabilityMasahiro Yamada2015-01-23-20/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Match the suffixes of SG_MEMCONF_* macros with SZ_* macros defined by <linux/sizes.h> for readability. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
| * | | | ARM: UniPhier: use <linux/sizes.h> for readabilityMasahiro Yamada2015-01-23-12/+13
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
| * | | | ARM: UniPhier: remove __packed that causes a problem on GCC 4.9Masahiro Yamada2015-01-23-1/+1
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DDR PHY training function, ddrphy_prepare_training() would not work if compiled with GCC 4.9. The struct ddrphy (arch/arm/include/asm/arch-uniphier/ddrphy-regs.h) is specified with __packed because it represents a hardware register mapping, but it turned out to cause a problem on GCC 4.9. If -mno-unaligned-access is specified (yes, it is in arch/arm/cpu/armv7/config.mk), GCC 4.9 is aware of the __attribute__((packed)) and generates extra instructions to perform the memory access in a way that does not cause unaligned access. (Actually it is not need here because the register base, the first argument of the ddrphy_prepare_training(), is always given with a 4-byte aligned address.) Anyway, as a result, readl() / writel() is divided into byte-wise accesses. The problem is that this hardware only accepts 4-byte register access. Byte-wise accesses lead to unexpected behavior. There are some options to avoid this problem. [1] Remove -mno-unaligned-access [2] Add __aligned(4) along with __packed to struct ddrphy [3] Remove __packed from struct ddrphy [1] solves the problem for ARMv7, but it does not for pre-ARMv6 and ARMv6-M architectures where -mno-unaligned-access is default. So, [1] does not seem reasonable in terms of code portability. Both [2] and [3] work well, but [2] seems too much. All the members of struct ddrphy have the u32 type. No padding would be inserted even if __packed is dropped. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Tom Rini <trini@ti.com>
* | | | mmc: zynq: Use phys_addr_t for addressesMichal Simek2015-01-21-1/+1
|/ / / | | | | | | | | | | | | | | | | | | phys_addr_t is designed for physical addresses that's why use it. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* | | mmc: rmobile: Add SDHC support for Renesas rmobile ARM SoCNobuhiro Iwamatsu2015-01-19-0/+192
| |/ |/| | | | | | | | | | | | | This adds Renesas rmobile ARM SoC's SD/MMC host support. This drivers tested with Gose board and Koelsch board. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
* | Merge branch 'master' of git://git.denx.de/u-boot-tiTom Rini2015-01-16-5/+45
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| * | arm: am437x: Enable hardware leveling for EMIFJames Doublesin2015-01-13-5/+45
| |/ | | | | | | | | | | | | | | | | | | | | | | Switch to using hardware leveling for certain parameters on the EMIF rather than using precalculated values. Doing this also means we have a common place now between am437x and am335x for setting emif_sdram_ref_ctrl with a value for the correct delay length. Tested-by: Felipe Balbi <balbi@ti.com> Tested-by: Tom Rini <trini@ti.com> Signed-off-by: James Doublesin <doublesin@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
* | sunxi: usbc: Add support for usb0 to the common usbc codeHans de Goede2015-01-14-1/+5
| | | | | | | | | | Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | sunxi: Move usb-controller init code out of ehci-sunxi.c for reuse for otgHans de Goede2015-01-14-3/+24
| | | | | | | | | | | | | | | | | | | | Most of the usb-controller init code found in ehci-sunxi.c also is necessary to init the otg usb controller, so move it to a common place. While at it also update various #ifdefs / defines for sun8i support. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | sunxi: video: Add lvds supportHans de Goede2015-01-14-0/+15
| | | | | | | | | | | | | | Add support for lvds lcd panels Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Anatolij Gustschin <agust@denx.de>
* | sunxi: video: Add VGA output supportHans de Goede2015-01-14-0/+78
| | | | | | | | | | | | | | Add support for VGA directly from the sunxi SoC / display engine. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | sunxi: video: Add lcd output supportHans de Goede2015-01-14-6/+26
| | | | | | | | | | | | | | | | Add lcd output support, see the new Kconfig entries and doc/README.video for how to enable / configure this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | sunxi: video: Modify sunxi_lcdc_pll_set to work with both tcon0 and tcon1Hans de Goede2015-01-14-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Modify sunxi_lcdc_pll_set to work with both tcon0 and tcon1, this is a preparation patch for adding lcd support. While at it also swap the divider search order, searching from low to high, as the comment above the code says we should do. In cases where there are multiple solutions this will result in picking a lower pll clock and divider, which is more stable and saves power. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | sunxi: gpio: Add support for gpio pins on the AXP209 pmicHans de Goede2015-01-14-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some boards use GPIO-s on the pmic, one example of this is the A13-OLinuXino board, which uses gpio0 of the axp209 for the lcd-power signal. This commit adds support for gpio pins on the AXP209 pmic, the sunxi_gpio.c changes are universal, adding gpio support for the other AXP pmics (when necessary) should be a matter of adding the necessary axp_gpio_foo functions to their resp. drivers, and add "#define AXP_GPIO" to their header file. Note this commit only adds support for the non device-model version of the gpio code, patches for adding support to the device-model version are very welcome. The string representation for these gpio-s is AXP0-#, the 0 in the AXP0 prefix is there in case we need to support gpio-s on more then 1 pmic in the future. At least A80 boards have 2 pmics, and we may end up needing to support gpio-s on both. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | sunxi: gpio: Properly sort mux defines by port numberHans de Goede2015-01-14-5/+5
| | | | | | | | | | | | | | | | Move a few mux defines around so that all the mux defines are properly sorted by port number. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | sunxi: video: Set input sync enableHans de Goede2015-01-14-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a write to the "unknown" (*) register to enable auto input sync, when initially adding sunxi hdmi output support this magic write from the android kernel code was missed, causing lcdc -> hdmi encoder sync problems. With this write added, we can drop the modesetting retries and the extra delays added to work around these sync problems. With the retries dropped there also is no need to 0 all the enable flags at the beginning of the modeset, as they are initialized to 0 already by engines_init. *) "unknown" is the actual name of this register in the android kernel sources Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Anatolij Gustschin <agust@denx.de>
* | sunxi: video: Add hdmi supportHans de Goede2015-01-14-10/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So far we've been programming the hdmi-encoder to send out dvi data over the hdmi connector. This works well for most devices, including hdmi devices, but not all devices accept dvi data on a hdmi input. Add support for sending proper hdmi data over the hdmi output found on most sunxi boards. This can be turned on by adding monitor=hdmi as option to the video-mode env. variable. A follow up patch will determine whether to send dvi or hdmi automatically when EDID is used. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Anatolij Gustschin <agust@denx.de>
* | sunxi: video: Add DDC & EDID supportHans de Goede2015-01-14-0/+85
| | | | | | | | | | | | | | | | | | | | Add DDC & EDID support and use it to automatically select the native mode of the attached monitor. This can be disabled by adding edid=0 as option to the video-mode env. variable. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Anatolij Gustschin <agust@denx.de>