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docs: arm: tcm: Fix a few typos 

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Jonathan Neuschäfer 2020-02-18 17:38:25 +01:00 committed by Jonathan Corbet
parent 874ddbce48
commit 2d5dfb5911
1 changed files with 3 additions and 3 deletions
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Documentation/arm/tcm.rst
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@ -4,18 +4,18 @@ ARM TCM (Tightly-Coupled Memory) handling in Linux
Written by Linus Walleij <linus.walleij@stericsson.com> Written by Linus Walleij <linus.walleij@stericsson.com>
Some ARM SoC:s have a so-called TCM (Tightly-Coupled Memory). Some ARM SoCs have a so-called TCM (Tightly-Coupled Memory).
This is usually just a few (4-64) KiB of RAM inside the ARM This is usually just a few (4-64) KiB of RAM inside the ARM
processor. processor.
Due to being embedded inside the CPU The TCM has a Due to being embedded inside the CPU, the TCM has a
Harvard-architecture, so there is an ITCM (instruction TCM) Harvard-architecture, so there is an ITCM (instruction TCM)
and a DTCM (data TCM). The DTCM can not contain any and a DTCM (data TCM). The DTCM can not contain any
instructions, but the ITCM can actually contain data. instructions, but the ITCM can actually contain data.
The size of DTCM or ITCM is minimum 4KiB so the typical The size of DTCM or ITCM is minimum 4KiB so the typical
minimum configuration is 4KiB ITCM and 4KiB DTCM. minimum configuration is 4KiB ITCM and 4KiB DTCM.
ARM CPU:s have special registers to read out status, physical ARM CPUs have special registers to read out status, physical
location and size of TCM memories. arch/arm/include/asm/cputype.h location and size of TCM memories. arch/arm/include/asm/cputype.h
defines a CPUID_TCM register that you can read out from the defines a CPUID_TCM register that you can read out from the
system control coprocessor. Documentation from ARM can be found system control coprocessor. Documentation from ARM can be found