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* DMA: Split the APBH DMA init into block and channel initMarek Vasut2012-04-16-0/+6
| | | | | | | | | | | | | | | | | | | | | | | This fixes the issue where mxs_dma_init() was called either twice or never, without introducing any new init hooks. The idea is to allow each and every device using the APBH DMA block to configure and request only the channels it uses, instead of making it call init for all the channels as is now. The common DMA block init part, which only configures the block, is then called from CPUs arch_cpu_init() call. NOTE: This patch depends on: http://patchwork.ozlabs.org/patch/150957/ Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
* i.MX28: Enable caches by defaultMarek Vasut2012-03-29-0/+10
| | | | | Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* i.MX28: Drop __naked function from spl_mem_initMarek Vasut2012-03-27-7/+3
| | | | | | | | | | | | | Instead of compiling the function and using the result as a constant, simply use the constant. NOTE: This patch works around bug: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52546 Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Tom Rini <trini@ti.com>
* i.MX28: Make the stabilization delays shorterMarek Vasut2012-03-27-4/+4
| | | | | | | | | | | | | Cut down the VDDIO/VDDA regulator stabilization delays to 500 uS. That should be enough according to the datasheet and bootlets. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Robert Deliën <robert@delien.nl> Cc: Fabio Estevam <festevam@gmail.com> Cc: Matthias Fuchs <matthias.fuchs@esd.eu>
* i.MX28: Enable additional DRAM address bitsMarek Vasut2012-03-27-1/+1
| | | | | | | | Enables all fourteen address lines for DRAM Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Marek Vasut <marek.vasut@gmail.com> Tested-by: Marek Vasut <marek.vasut@gmail.com>
* Fix erroneous 32-bit access to hw_clkctrl_frac0 and hw_clkctrl_frac1 registersRobert Delien2012-03-26-57/+39
| | | | | | | | | This patch fixes erroneous 32-bit access to registers hw_clkctrl_frac0 and hw_clkctrl_frac1. Signed-off-by: Robert Delien <robert@delien.nl> Acked-by: Marek Vasut <marex@denx.de> Tested-by: Marek Vasut <marex@denx.de>
* Renamed mx28_register to mx28_register_32 to prepare for mx28_register_8Robert Delien2012-03-26-8/+8
| | | | | | | | | This patch renames mx28_register to mx28_register_32 in order to prepare for the introduction of an 8-bit register, mx28_register_8. Signed-off-by: Robert Delien <robert@delien.nl> Acked-by: Marek Vasut <marex@denx.de> Tested-by: Marek Vasut <marex@denx.de>
* i.MX28: Reformat the DRAM memory configuration dataMarek Vasut2012-03-26-38/+48
| | | | | | Reformat the data so it's easier to navigate through them. Signed-off-by: Marek Vasut <marex@denx.de>
* i.mx28: Replaced magic numbers for scratch register addresses with register ↵Robert Delien2012-03-26-8/+8
| | | | | | | | | definitions This patch replaces the use of magice numbers for scratch register addresses with earlier defined register definitions. Signed-off-by: Robert Delien <robert@delien.nl>
* MX28: Fix get_timer() / get_tbclk() issueMarek Vasut2012-02-27-2/+17
| | | | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <festevam@gmail.com>
* mx28: fix SPL code to make USB booting workMatthias Fuchs2012-02-27-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes booting i.MX28 CPUs via USB download. In this mode the CPU's bootrom implements a USB HID device that accepts a bootstream. When downloading the bootstream via USB, first the SPL code is received and executed. Then the u-boot image is received and called. The USB bootmode is interrupt driven. This patch fixes two things: 1) The ARM's fast interrupt mode is disabled when the SPL code has been run. So save and restore the CPSR register. 2) Save and restore c1 control register: the exception vector location needs to be set back to bootrom space to make the USB interrupts work again. The SPL code needs to change this option for the ram size probing. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu> Acked-by: Marek Vasut <marek.vasut@gmail.com>
* i.MX28: Fix VDDIO and VDDA setupMarek Vasut2012-02-27-4/+12
| | | | | | | | | | | | The DC power STS shouldn't be checked if booting off 5V supply. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Robert Deliën <robert@delien.nl> Cc: Fabio Estevam <festevam@gmail.com> Cc: Matthias Fuchs <matthias.fuchs@esd.eu>
* mx28: Show CPU frequencyFabio Estevam2012-02-12-1/+2
| | | | | | | | Showing CPU frequency during boot is useful information. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Stefano Babic <sbabic@denx.de>
* mx28: fix clearing of IRQs in power initZach Sadecki2012-01-16-4/+4
| | | | | | | | | There are 2 locations in the power init code for the mx28 where IRQs are not being cleared because incorrect methods to clear those bits were being used. This was causing my board to get stuck waiting for POWER_CTRL_VDD5V_DROOP_IRQ to clear. Using the correct method to clear the IRQs fixes it. Signed-off-by: Zach Sadecki <zach@itwatchdogs.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Stefano Babic <sbabic@denx.de> Acked-by: Marek Vasut <marek.vasut@gmail.com>
* mx28: Let dram_init be common for mx28Fabio Estevam2012-01-16-0/+21
| | | | | | | | Let dram_init function be a common function, so that other mx28 boards can reuse it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
* mx28: Let imx_get_mac_from_fuse be common for mx28Fabio Estevam2012-01-16-0/+46
| | | | | | | | | Let imx_get_mac_from_fuse function be a common function, so that other mx28 boards can reuse it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Stefano Babic <sbabic@denx.de>
* mx28: remove omap specific config optionsVeli-Pekka Peltola2012-01-16-6/+0
| | | | | | | | | | | Config options for OMAP are not used with i.MX28 so remove dead code. Signed-off-by: Veli-Pekka Peltola <veli-pekka.peltola@bluegiga.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
* M28: Cleanup memsize.o OOT buildMarek Vasut2011-12-09-23/+9
| | | | | | | | | | | | | | | | The current way memsize.c is built just made a symlink into the directory with SPL and then compiled it like any other file there. This was bad as that broke the out-of-tree build. The new way introduced in this patch uses the standard spl/Makefile methods (CONFIG_SPL_LIBCOMMON_SUPPORT / CONFIG_SPL_LIBGENERIC_SUPPORT) to let files in common/ be built. Because common/Makefile says memsize.c is always built (SPL and non-SPL build), this fixes our issue with memsize.c out-of-tree build. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* i.MX28: Move SPL to arch/arm/cpu/arm926ejs/mx28Marek Vasut2011-12-09-0/+1611
| | | | | | | | | | This moves SPL to common location so it can be reused by multiple boards. Also, this commit adjusts M28 SoM to avoid breakage due to the move. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* iMX28: Fix ARM vector handlingMarek Vasut2011-11-11-0/+22
| | | | | | | | | | | | | | | This patch introduces proper ARM vector handling for i.MX28 CPU. This issue wasn't addressed because the interrupts weren't enabled on any ARMv5 core, therefore the issue wasn't noticed earlier. In previous implementation, the vectoring code used by i.MX28 CPU when an exception happened was that of the SPL. With this change, the branch target when an exception happens can be reconfigured by U-Boot. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de>
* iMX28: Add GPIO controlMarek Vasut2011-11-11-0/+6
| | | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de>
* iMX28: Add PINMUX controlMarek Vasut2011-11-11-1/+110
| | | | | | | | | | | | | | | Taken from Linux kernel with minor modifications: commit bf985969e27b507f734435a99df8bf745a3dbb2b Author: Shawn Guo <shawn.guo@freescale.com> Date: Mon Dec 20 22:57:43 2010 +0800 ARM: mxs: Add iomux support Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de>
* iMX28: Initial support for iMX28 CPUMarek Vasut2011-11-11-0/+735
This patch supports: - Timers - Debug UART - Clock Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de>
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