Tom Rini 7dbafe0634 Merge tag 'arc-last-minute-fixes-for-2020.04' of https://gitlab.denx.de/u-boot/custodians/u-boot-arc ... This last minute pull-request is intended to fix some drivers when used on ARC boards. The problem was introduced by 07906b3dad What happened while doing one pretty simple improvement to make U-Boot port more flexible and portable (by switching accessors from assembly-written to plain C version) we implicitly added 2 problems: 1. Downgraded accessors from being volatile which signalled to the compiler that it's now possible to do all kinds of optimizations which may easily include merge of subsequent byte reads/writes into word operations. Which is OK for accessing mormal memory but breaks operation of peripherals if we access its memory-mapped regs in such a "creative" manner. 2. As a part of assembly-written implementation we had compiler barriers in form of the following construction 'asm volatile("" : : : "memory")', and we dropped it in C implemntation. This in its turn enabled compiler to mess with instruction ordering. Guess what it gives us in the end :) So with all that we had in some corner-cases veeery funny instruction flows generated. And in particular it broke DW SPI functionality when we were writing large amount of data. Funny enough our tests which were writing small amount of data still worked and only by the chance we caught that breakage and unrolled that quite interesting loop of unexpected problems. The road to hell is paved with good intentions. Amen :)		2020-03-31 15:10:54 -04:00
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arc	ARC: IO: add MB for __raw_* memory accessors	2020-03-31 18:31:53 +03:00
arm	Merge branch 'master' of git://git.denx.de/u-boot-socfpga	2020-03-31 10:05:25 -04:00
m68k	dma-mapping: add <asm/dma-mapping.h> for all architectures	2020-02-20 15:09:54 +08:00
microblaze	dma-mapping: add <asm/dma-mapping.h> for all architectures	2020-02-20 15:09:54 +08:00
mips	dma-mapping: add <asm/dma-mapping.h> for all architectures	2020-02-20 15:09:54 +08:00
nds32	dma-mapping: move dma_map_(un)single() to <linux/dma-mapping.h>	2020-02-19 21:27:30 +08:00
nios2	common: Move hang() to the same header as panic()	2020-01-24 23:06:49 +05:30
powerpc	gazerbeam: add clocks property to SPI node	2020-03-31 10:06:52 -04:00
riscv	riscv: Implement new SBI v0.2 extensions	2020-03-17 11:29:54 +08:00
sandbox	dma-mapping: add <asm/dma-mapping.h> for all architectures	2020-02-20 15:09:54 +08:00
sh	dma-mapping: add <asm/dma-mapping.h> for all architectures	2020-02-20 15:09:54 +08:00
x86	x86: apl: Use cpu_x86_get_count() for cpu_ops.get_count	2020-03-05 18:25:22 +08:00
xtensa	dma-mapping: add <asm/dma-mapping.h> for all architectures	2020-02-20 15:09:54 +08:00
.gitignore
Kconfig	x86: Enable pinctrl in SPL and TPL	2019-12-15 11:44:24 +08:00