u-boot-brain/arch/arm/cpu
Akshay Bhat 90d7cc42b3 imx: mx6: Fix procedure to switch the parent of LDB_DI_CLK
Due to incorrect placement of the clock gate cell in the ldb_di[x]_clk tree,
the glitchy parent mux of ldb_di[x]_clk can cause a glitch to enter the
ldb_di_ipu_div divider. If the divider gets locked up, no ldb_di[x]_clk is
generated, and the LVDS display will hang when the ipu_di_clk is sourced from
ldb_di_clk.

To fix the problem, both the new and current parent of the ldb_di_clk should
be disabled before the switch. This patch ensures that correct steps are
followed when ldb_di_clk parent is switched in the beginning of boot.

This patch was ported from the 3.10.17 NXP kernel
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/commit/?h=imx_3.10.17_1.0.1_ga&id=eecbe9a52587cf9eec30132fb9b8a6761f3a1e6d

NXP errata number: ERR009219, EB821

Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
2016-04-19 16:05:12 +02:00
..
arm11 ARM: cache: implement a default weak flush_cache() function 2015-08-12 20:47:48 -04:00
arm720t ARM: ARM720t: remove empty asm/arch/hardware.h 2015-04-23 08:52:27 -04:00
arm920t ARM: start.S: fix typo 2016-02-29 14:49:35 -05:00
arm926ejs mx27: 16-bit wide watchdog registers 2016-03-25 14:03:28 +01:00
arm946es ARM: start.S: fix typo 2016-02-29 14:49:35 -05:00
arm1136 ARM: start.S: fix typo 2016-02-29 14:49:35 -05:00
arm1176 ARM: start.S: fix typo 2016-02-29 14:49:35 -05:00
armv7 imx: mx6: Fix procedure to switch the parent of LDB_DI_CLK 2016-04-19 16:05:12 +02:00
armv7m stm32: move stm32 specific code to mach-stm32 2016-01-20 10:19:41 -05:00
armv8 ARM: allow CONFIG_GICV* not to be defined 2016-04-11 12:44:38 -04:00
pxa pxa: add support for D- and I- caches 2016-03-27 09:13:00 -04:00
sa1100 ARM: start.S: fix typo 2016-02-29 14:49:35 -05:00
Makefile Various Makefiles: Add SPDX-License-Identifier tags 2015-11-10 09:19:52 -05:00
u-boot-spl.lds spl: arm: Make sure to include all of the u_boot_list entries 2016-03-16 15:27:55 -04:00
u-boot.lds arm: x86: Drop command-line code when CONFIG_CMDLINE is disabled 2016-03-22 12:16:09 -04:00