[U-Boot] [PATCH 13/16] atmel: Drop README.at91-soc
Simon Glass
sjg at chromium.org
Mon Oct 3 02:01:08 CEST 2016
This issue covered by this doc appears to be fixed, so let's remove the
README.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
doc/README.at91-soc | 48 ------------------------------------------------
1 file changed, 48 deletions(-)
delete mode 100644 doc/README.at91-soc
diff --git a/doc/README.at91-soc b/doc/README.at91-soc
deleted file mode 100644
index 9a9f74e..0000000
--- a/doc/README.at91-soc
+++ /dev/null
@@ -1,48 +0,0 @@
- New C structure AT91 SoC access
-=================================
-
-The goal
---------
-
-Currently the at91 arch uses hundreds of address defines and special
-at91_xxxx_write/read functions to access the SOC.
-The u-boot project perferred method is to access memory mapped hw
-regisister via a c structure.
-
-e.g. old
-
- *AT91C_PIOA_IDR = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK;
- *AT91C_PIOC_PUDR = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK;
- *AT91C_PIOC_PER = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK;
- *AT91C_PIOC_OER = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK;
- *AT91C_PIOC_PIO = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK;
-
- at91_sys_write(AT91_RSTC_CR,
- AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
-
-e.g new
- pin = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK;
- writel(pin, &pio->pioa.idr);
- writel(pin, &pio->pioa.pudr);
- writel(pin, &pio->pioa.per);
- writel(pin, &pio->pioa.oer);
- writel(pin, &pio->pioa.sodr);
-
- writel(AT91_RSTC_KEY | AT91_RSTC_CR_PROCRST |
- AT91_RSTC_CR_PERRST, &rstc->cr);
-
-The method for updating
-------------------------
-
-1. add's the temporary CONFIG_AT91_LEGACY to all at91 board configs
-2. Display a compile time warning, if the board has not been converted
-3. add new structures for SoC access
-4. Convert arch, driver and boards file to new SoC
-5. remove legacy code, if all boards and drives are ready
-
-2013-10-30 Andreas Bießmann <andreas at biessmann.org>:
-
-The goal is almost reached, we could remove the CONFIG_AT91_LEGACY switch but
-remain the CONFIG_ATMEL_LEGACY switch until the GPIO disaster is fixed. The
-AT91 spi driver has also some CONFIG_ATMEL_LEGACY stuff left, so another point
-to fix until this README can be removed.
--
2.8.0.rc3.226.g39d4020
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