diff options
| author | Simon Glass <sjg@chromium.org> | 2016-10-02 18:01:08 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-10-06 20:40:46 -0400 |
| commit | b44b632a68bf9c3425225e8cab8289f981f1ad33 (patch) | |
| tree | 2a3898d7b94e6bc6b53653018c0d9469ccc9d36e /doc/README.at91-soc | |
| parent | 4b7283a3d6527b8d1b2f8db903ce1e5446f91414 (diff) | |
| download | u-boot-b44b632a68bf9c3425225e8cab8289f981f1ad33.tar.gz u-boot-b44b632a68bf9c3425225e8cab8289f981f1ad33.tar.xz u-boot-b44b632a68bf9c3425225e8cab8289f981f1ad33.zip | |
atmel: Drop README.at91-soc
This issue covered by this doc appears to be fixed, so let's remove the
README.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Acked-by: Andreas Bießmann <andreas@biessmann.org>
Diffstat (limited to 'doc/README.at91-soc')
| -rw-r--r-- | doc/README.at91-soc | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/doc/README.at91-soc b/doc/README.at91-soc deleted file mode 100644 index 9a9f74e234..0000000000 --- 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@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. |