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* | arm: mvebu: Setup the MBUS bridge registersStefan Roese2015-08-17-0/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | With this patch, the MBUS bridge registers (base and size) are configured upon each call to mbus_dt_setup_win(). This is needed, since the board code can also call this function in later boot stages. As done in the maxbcm board. This is needed to fix a problem with the secondary CPU's not booting in Linux on AXP. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Peter Morrow <peter@senient.com> Cc: Luka Perkov <luka.perkov@sartura.hr>
* | arm: mvebu: Change MBUS base addresses and sizesStefan Roese2015-08-17-10/+16
| | | | | | | | | | | | | | | | | | This patch changes the MBUS base addresses and sizes to use more generic names and also adds defines for the sizes. It also moves the base address to higher addresses. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Luka Perkov <luka.perkov@sartura.hr>
* | arm: mvebu/armada100: dram.c: Remove CONFIG_SYS_BOARD_DRAM_INITStefan Roese2015-08-17-4/+0
| | | | | | | | | | | | | | | | CONFIG_SYS_BOARD_DRAM_INIT is not defined anywhere. So lets get rid of all references here. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Luka Perkov <luka.perkov@sartura.hr>
* | arm: lpc32xx: gpio macro for pin mappingSylvain Lemieux2015-08-17-0/+40
| | | | | | | | | | | | Add LPC32xx GPIO interface macro for pin mapping. Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
* | lpc32xx: cpu: add support for soft resetSylvain Lemieux2015-08-17-6/+17
| | | | | | | | | | | | | | | | Add support for optional soft reset (i.e. "RESOUT_N" not asserted during reset). To be compatible with the original U-Boot code, when the "addr" parameter is 0, a hard is performed; for any other values, a soft reset is done. Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
* | arm: lpc32xx: mux: add missing registersSylvain Lemieux2015-08-17-1/+18
|/ | | | | | | Add missing registers in struct definition. Update GPIO MUX base register to match GPIO base (refer to "LPC32x0 User manual" Rev. 3 - 22 July 2011). Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
* sun6i: clock: Add support for the mipi pllHans de Goede2015-08-14-0/+70
| | | | | | | | Add support for the mipi pll, this is necessary for getting higher dotclocks with lcd panels. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: clock: Add clock_get_pll3() helper functionHans de Goede2015-08-14-0/+29
| | | | | | | Add a helper function to get the pll3 clock rate. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: Fix gmac not working on the Colombus boardHans de Goede2015-08-14-0/+12
| | | | | | | | | The phy is using a RGMII interface, which we need to specify in our board-config, and the dts needs a gmac section (the dts changes have also been submitted to the kernel). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: Add support for the Auxtek-T003 HDMI stickHans de Goede2015-08-14-0/+160
| | | | | | | | The Auxtek-T003 HDMI stick is an A10s based HDMI stick with USB wifi, and composite video out support. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: dts: Sync with kernelHans de Goede2015-08-14-39/+910
| | | | | | | | Sync the sunxi dts files with the changes queued up for kernel-4.3 in mripard's sunxi/dt-for-4.3 branch. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: display: Fix composite video out on sun5iHans de Goede2015-08-14-1/+16
| | | | | | | | The tv-encoder on sun5i is slightly different compared to the one on sun4i/sun7i. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* ARM: tegra: represent RAM in 1 or 2 banksStephen Warren2015-08-13-14/+106
| | | | | | | | | | | | | | | | | | | | | Represent all available RAM in either one or two banks. The first bank describes any RAM below 4GB. The second bank describes any RAM above 4GB. This split is driven by the following requirements: - The NVIDIA L4T kernel requires separate entries in the DT /memory/reg property for memory below and above the 4GB boundary. The layout of that DT property is directly driven by the entries in the U-Boot bank array. - On systems with RAM beyond a physical address of 4GB, the potential existence of a carve-out at the end of RAM below 4GB can only be represented using multiple banks, since usable RAM is not contiguous. While making this change, add a lot more comments re: how and why RAM is represented in banks, and implement a few more "semantic" functions that define (and perhaps later detect at run-time) the size of any carve-out. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
* ARM: tegra: query_sdram_size() cleanupStephen Warren2015-08-13-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The return value of query_sdram_size() is assigned directly to gd->ram_size in dram_init(). Adjust the return type to match the field it's assigned to. This has the beneficial effect that on 64-bit systems, the return value can correctly represent large RAM sizes over 4GB. For similar reasons, change the type of variable size_bytes in the same way. query_sdram_size() would previously clip the detected RAM size to at most just under 4GB in all cases, since on 32-bit systems, larger values could not be represented. Disable this feature on 64-bit systems since the representation restriction does not exist. On 64-bit systems, never call get_ram_size() to validate the detected/ calculated RAM size. On any system with a secure OS/... carve-out, RAM may not have a single contiguous usable area, and this can confuse get_ram_size(). Ideally, we'd make this call conditional upon some other flag that indicates specifically that a carve-out is actually in use. At present, building for a 64-bit system is the best indication we have of this fact. In fact, the call to get_ram_size() is not useful by the time U-Boot runs on any system, since U-Boot (and potentially much other early boot software) always runs from RAM on Tegra, so any mistakes in memory controller register programming will already have manifested themselves and prevented U-Boot from running to this point. In the future, we may simply delete the call to get_ram_size() in all cases. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* tegra: Correct logic for reading pll_misc in clock_start_pll()Simon Glass2015-08-13-13/+31
| | | | | | | | | | | | The logic for simple PLLs on T124 was broken by this commit: 722e000c Tegra: PLL: use per-SoC pllinfo table instead of PLL_DIVM/N/P, etc. Correct it by reading from the same pll_misc register that it writes to and adding an entry for the DP PLL in the pllinfo table. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
* ARM: tegra: Make pinmux.h standalone includibleThierry Reding2015-08-13-0/+2
| | | | | | | | | | | This header file uses type definitions (u8, u32) from linux/types.h but doesn't include it. If includes aren't carefully ordered this can cause build failures. Cc: Tom Warren <twarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* apalis/colibri_t30: fix usb dm regressionMarcel Ziswiler2015-08-13-2/+2
| | | | | | | | | | | | | | | | Unfortunately currently both Apalis T30 as well as Colibri T30 crash upon starting USB host support. This is due to the following patch not having taken into account that our T30 device trees were defaulting to peripheral only mode instead of otg: commit ddb9a502d18008e845d5a8fa03ec48630fa77fb7 dm: usb: tegra: Move most of init/uninit into a function This patch fixes this by defaulting to otg now. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* apalis/colibri_t20/30: clean-upMarcel Ziswiler2015-08-13-2/+4
| | | | | | | | | | | | | | | Various clean-ups either in comments, order or spacing without any functional impact: - Add some comments in the device trees resp. reorder some parameters for consistency across all our modules. - Sort some include files alphabetically (while leaving common.h on top of course). - Streamline some comments in the configuration files and fix the spacing from using spaces to tabs. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* colibri_t20: add i2c supportMarcel Ziswiler2015-08-13-0/+28
| | | | | | | | | | Add I2C support in order to subsequently allow disabling the PMIC sleep mode on low supply voltage. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* colibri_t20: add lcd display supportMarcel Ziswiler2015-08-13-0/+29
| | | | | | | | | | Add LCD display support defaulting to VESA VGA resolution. Different resolutions configurable via device tree. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* colibri_t20: fix device-tree compatible nodeMarcel Ziswiler2015-08-13-1/+1
| | | | | | | | | | Use toradex,colibri_t20 as the device-tree compatible node value rather than toradex,t20 in accordance to our Apalis/Colibri T30 products. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* ARM: tegra: allow reading recovery mode boot typeMarcel Ziswiler2015-08-13-0/+2
| | | | | | | | | | Add defines to allow reading recovery mode (RCM) boot type from the boot information table (BIT) written by the boot ROM (BR) to the IRAM. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* Merge branch 'master' of git://git.denx.de/u-boot-netTom Rini2015-08-13-1/+6
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| * net: lpc32xx: add RMII phy mode supportVladimir Zapolskiy2015-08-11-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LPC32xx MAC and clock control configuration requires some minor quirks to deal with a phy connected by RMII. It's worth to mention that the kernel and legacy BSP from NXP sets SUPP_RESET_RMII == (1 << 11) bit, however the description of this bit is missing in shared LPC32x0 User Manual UM10326 Rev. 3, July 22, 2011 and in LPC32x0 Draft User Mannual Rev. 00.27, November 20, 2008, also in my tests an SMSC LAN8700 phy device connected over RMII seems to work correctly without touching this bit. Add support of RMII, if CONFIG_RMII is defined, this option is aligned with a number of boards, which already define the same config value. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Tested-by: Sylvain Lemieux <slemieux@tycoint.com>
* | ARM: drop "optional" from target select in favor of ARCH_VERSATILEMasahiro Yamada2015-08-12-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit a26cd04920dc ("arch: Make board selection choices optional"), Kconfig could create such an insane .config file that no SoC/board is selected. This is now a real problem for Buildroot, for example. (http://lists.busybox.net/pipermail/buildroot/2015-July/135125.html) This commit drops the "optional" from the ARM target select menu in favor of "Versatile family". Rationale: - Historically, Linux chose versatile_defconfig as the default of ARM defconfig. (arch/arm/Makefile of Linux describes: KBUILD_DEFCONFIG := versatile_defconfig) - It was published by ARM Ltd. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* | dra7xx: Add dra72_evm_defconfig using CONFIG_DMTom Rini2015-08-12-0/+4506
| | | | | | | | | | | | | | | | | | | | - Import various DT files for DRA7 / DR72x / dra72-evm from Linux Kernel v4.1 - Add config file for this board, enable DM and DM_GPIO Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* | ARM: SPL: Use CONFIG_SPL_DM not CONFIG_DMTom Rini2015-08-12-3/+3
| | | | | | | | | | | | | | | | | | We now have the CONFIG_SPL_DM for code within SPL to toggle caring about DM or not. Without this change platforms that do enable CONFIG_DM but not CONFIG_SPL_DM may be broken (such as OMAP5). Cc: Albert Aribaud <albert.u.boot@aribaud.net> Signed-off-by: Tom Rini <trini@konsulko.com>
* | gpio: omap: Drop 'method' parameterTom Rini2015-08-12-38/+35
| | | | | | | | | | | | | | | | | | | | The "method" parameter was part of the original port of the driver from the kernel. At some point this may have been added to allow for future differentiation (as omap1 and omap2 have different GPIO IP blocks, so this wasn't an unreasonable thing to do). At this point however it's just extra overhead, so drop. Signed-off-by: Tom Rini <trini@konsulko.com>
* | am33xx: Update DT files, add am335x_gp_evm_config targetTom Rini2015-08-12-206/+2142
| | | | | | | | | | | | | | | | | | | | - Re-sync DT files for am33xx with Linux Kernel v4.1 - Include DT file now for the "AM335x GP EVM" and build target for it, via device tree and DM. - We only need to provide platform data for UART when OF_CONTROL isn't also enabled really. We can just push GPIO to coming from DT Signed-off-by: Tom Rini <trini@konsulko.com>
* | arm: am437x: Introduce new board cm-t43Nikita Kiryanov2015-08-12-0/+6
| | | | | | | | | | | | | | | | | | | | | | Add initial support for CM-T43, an AM437x based SoM. This support includes: serial, MMC/eMMC, NAND, USB, ETH, I2C, GPIO, DRAM detection. Cc: Tom Rini <trini@konsulko.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
* | gpio: am43xx: expand gpio supportNikita Kiryanov2015-08-12-0/+4
| | | | | | | | | | | | | | | | | | AM43XX SoCs support up to 192 GPIO signals. Make this amount available to the driver. Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
* | arm: am43xx: enable spi clockNikita Kiryanov2015-08-12-0/+1
| | | | | | | | | | | | | | | | | | | | Add spi clock to the list of am43xx basic clocks to make the SPI subsystem available on am43xx systems. Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Reviewed-by: Jagan Teki <jteki@openedev.com>
* | ARM64: hikey: hi6220: Add u-boot support for the 96boards CE HiKey board.Peter Griffin2015-08-12-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | HiKey is the first 96boards consumer edition compliant board. It features a hi6220 SoC which has eight ARM A53 cpu's. This initial port adds support for: - 1) Serial 2) eMMC / SD card 3) USB 4) GPIO It has been tested with Arm Trusted Firmware running u-boot as the BL33 executable. Notes: eMMC has been tested with basic reading of eMMC partition into DDR. I have not tested writing / erasing. Due to lack of clock control it won't be running in the most performant high speed mode. SD card slot has been tested for reading and booting kernels into DDR. It is also currently configured to save the u-boot environment to the SD card. USB has been tested with ASIX networking adapter to tftpboot kernels into DDR. On v2015.07-rc2 dhcp now works, and also USB mass storage are correctly enumerated. GPIO has been tested using gpio toggle GPIO4_1-3 to flash the LEDs. Basic SoC datasheet can be found here: - https://github.com/96boards/documentation/blob/master/hikey/ Hi6220V100_Multi-Mode_Application_Processor_Function_Description.pdf Board schematic can be found here: - https://github.com/96boards/documentation/blob/master/hikey/ 96Boards-Hikey-Rev-A1.pdf Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
* | mmc: hi6220_dw_mmc: Add hi6220 glue code for dw_mmc controller.Peter Griffin2015-08-12-0/+8
| | | | | | | | | | | | | | | | | | This patch adds the glue code for hi6220 SoC which has 2x synopsis dw_mmc controllers. This will be used by the hikey board support in subsequent patches. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
* | hisilicon: hi6220: Add a hi6220 pinmux driver.Peter Griffin2015-08-12-0/+305
| | | | | | | | | | | | | | This patch adds basic pinmux support for the hi6220 SoC, which is found on the hikey board. Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
* | ARM: hi6220: Add register and bitfield definition header files.Peter Griffin2015-08-12-0/+807
| | | | | | | | | | | | | | This patch adds the header files which will be used in the subsquent board / drivers to enable support for hi6220 hikey board. Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
* | dm: gpio: hi6220: Add a hi6220 GPIO driver model driver.Peter Griffin2015-08-12-0/+29
| | | | | | | | | | | | | | This patch adds support for the GPIO perif found on hi6220 SoC. Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
* | imx28: Fix issue with GCC 5.xMåns Rullgård2015-08-12-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The semantics for non-static functions declared inline have changed in gcc5, causing the empty functions not to be emitted as an external symbol. Since lowlevel_init() is only referenced from start.S, it should not be declared inline at all. Reported-by: Otavio Salvador <otavio@ossystems.com.br> Tested-by: Otavio Salvador <otavio@ossystems.com.br> [trini: Reword commit message] Signed-off-by: Tom Rini <trini@konsulko.com>
* | ARM: keystone2: Use common definition for clk_get_rateLokesh Vutla2015-08-12-103/+167
| | | | | | | | | | | | | | | | Since all the clocks are defined common, and has the same logic to get the frequencies, use a common definition for for clk_get_rate(). Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* | ARM: keystone2: Remove unsed external clocksLokesh Vutla2015-08-12-50/+13
| | | | | | | | | | | | | | | | Remove unused external clocks and make a common definition for all keystone platforms. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* | ARM: keystone2: Cleanup init_pll definitionLokesh Vutla2015-08-12-5/+10
| | | | | | | | | | | | | | | | | | This is just a cosmetic change that makes the calling of pll init code looks much cleaner. Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Vitaly Andrianov <vitalya@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* | ARM: keystone2: Use common structure for PLLsLokesh Vutla2015-08-12-51/+22
| | | | | | | | | | | | | | | | | | | | Register Base addresses are same for PLLs in all keystone platforms. If a PLL is not available, the corresponding register addresses are marked as reserved. Hence use a common definition. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* | ARM: keystone2: Fix dev and arm speed detectionLokesh Vutla2015-08-12-136/+72
| | | | | | | | | | | | | | | | | | Use common devspeed and armspeed definitions. Also fix reading efuse bootrom register. Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Vitaly Andrianov <vitalya@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* | ARM: keystone2: Cleanup PLL init codeLokesh Vutla2015-08-12-173/+199
| | | | | | | | | | | | | | | | | | | | | | There are two types of PLL for all keystone platforms: Main PLL, Secondary PLL. Instead of duplicating the same definition for each secondary PLL, have a common function which does initialization for both PLLs. And also add proper register definitions. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* | ARM: keystone2: Enable CONFIG_DISPLAY_CPUINFOLokesh Vutla2015-08-12-0/+32
| | | | | | | | | | | | | | | | | | | | Add print_cpuinfo() function and enable CONFIG_DISPLAY_CPUINFO for keystone platforms, so that cpu info can be displayed during boot. Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Vitaly Andrianov <vitalya@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* | ARM: keystone2: Cleanup SoC detectionLokesh Vutla2015-08-12-16/+26
| | | | | | | | | | | | | | | | | | Add proper register definition for JTAG ID and cleanup cpu_is_* functions. Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Vitaly Andrianov <vitalya@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* | ARM: DRA72: disable workaround for 801819Nishanth Menon2015-08-12-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DRA72x processor variants are single core and it does not export ACP[1]. Hence, we have no source for generating an external snoop requests which appear to be key to the deadlock in DRA72x design. Since we build the same image for DRA74x and DRA72x platforms, lets runtime detect and disable the workaround (in favor of performance) on DRA72x platforms. [1] http://infocenter.arm.com/help/topic/com.arm.doc.ddi0438i/BABIAJAG.html Suggested-by: Richard Woodruff <r-woodruff2@ti.com> Suggested-by: Brad Griffis <bgriffis@ti.com> Reviewed-by: Brad Griffis <bgriffis@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com>
* | ARM: DRA7/ OMAP5: implement Auxiliary Control Register configurationNishanth Menon2015-08-12-0/+7
| | | | | | | | | | | | | | | | | | | | Implement logic for ACR(Auxiliary Control Register) configuration using ROM Code smc service. Suggested-by: Richard Woodruff <r-woodruff2@ti.com> Suggested-by: Brad Griffis <bgriffis@ti.com> Reviewed-by: Brad Griffis <bgriffis@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com>
* | ARM: Introduce erratum workaround for 801819Nishanth Menon2015-08-12-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add workaround for Cortex-A15 ARM erratum 801819 which says in summary that "A livelock can occur in the L2 cache arbitration that might prevent a snoop from completing. Under certain conditions this can cause the system to deadlock. " Recommended workaround is as follows: Do both of the following: 1) Do not use the write-back no-allocate memory type. 2) Do not issue write-back cacheable stores at any time when the cache is disabled (SCTLR.C=0) and the MMU is enabled (SCTLR.M=1). Because it is implementation defined whether cacheable stores update the cache when the cache is disabled it is not expected that any portable code will execute cacheable stores when the cache is disabled. For implementations of Cortex-A15 configured without the “L2 arbitration register slice” option (typically one or two core systems), you must also do the following: 3) Disable write-streaming in each CPU by setting ACTLR[28:25] = 0b1111 So, we provide an option to disable write streaming on OMAP5 and DRA7. It is a rare condition to occur and may be enabled selectively based on platform acceptance of risk. Applies to: A15 revisions r2p0, r2p1, r2p2, r2p3 or r2p4 and REVIDR[3] is set to 0. Note: certain unicore SoCs *might* not have REVIDR[3] not set, but might not meet the condition for the erratum to occur when they donot have ACP (Accelerator Coherency Port) hooked to ACE (AXI Coherency Extensions). Such SoCs will need the work around handled in the SoC specific manner, since there is no ARM generic manner to detect such configurations. Based on ARM errata Document revision 18.0 (22 Nov 2013) Suggested-by: Richard Woodruff <r-woodruff2@ti.com> Suggested-by: Brad Griffis <bgriffis@ti.com> Reviewed-by: Brad Griffis <bgriffis@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com>
* | integrator: switch to DM serial portLinus Walleij2015-08-12-0/+5
| | | | | | | | | | | | | | | | This switches the Integrator boards over to using the device model for its serial ports. Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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