linux-stable/drivers/bcma
Andy Shevchenko f63bc78872 bcma: gpio: Switch to use fwnode instead of of_node
GPIO library now accepts fwnode as a firmware node,
so switch the driver to use it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220504092525.71668-1-andriy.shevchenko@linux.intel.com
2022-05-09 14:41:43 +03:00
..
bcma_private.h
core.c
driver_chipcommon.c bcma: cleanup comments 2022-02-21 10:58:14 +02:00
driver_chipcommon_b.c
driver_chipcommon_nflash.c mtd: rawnand: brcmnand: Add platform data structure for BCMA 2022-01-23 16:37:18 +01:00
driver_chipcommon_pflash.c
driver_chipcommon_pmu.c bcma: cleanup comments 2022-02-21 10:58:14 +02:00
driver_chipcommon_sflash.c
driver_gmac_cmn.c
driver_gpio.c bcma: gpio: Switch to use fwnode instead of of_node 2022-05-09 14:41:43 +03:00
driver_mips.c bcma: remove unused function 2021-04-18 09:36:56 +03:00
driver_pci.c
driver_pci_host.c bcma: cleanup comments 2022-02-21 10:58:14 +02:00
driver_pcie2.c
host_pci.c bcma: simplify reference to driver name 2021-10-12 17:50:12 -05:00
host_soc.c
Kconfig
main.c bcma: cleanup comments 2022-02-21 10:58:14 +02:00
Makefile
README
scan.c bcma: Drop the unused parameter of bcma_scan_read32() 2021-08-29 14:44:57 +03:00
scan.h
sprom.c bcma: cleanup comments 2022-02-21 10:58:14 +02:00
TODO

Broadcom introduced new bus as replacement for older SSB. It is based on AMBA,
however from programming point of view there is nothing AMBA specific we use.

Standard AMBA drivers are platform specific, have hardcoded addresses and use
AMBA standard fields like CID and PID.

In case of Broadcom's cards every device consists of:
1) Broadcom specific AMBA device. It is put on AMBA bus, but can not be treated
   as standard AMBA device. Reading it's CID or PID can cause machine lockup.
2) AMBA standard devices called ports or wrappers. They have CIDs (AMBA_CID)
   and PIDs (0x103BB369), but we do not use that info for anything. One of that
   devices is used for managing Broadcom specific core.

Addresses of AMBA devices are not hardcoded in driver and have to be read from
EPROM.

In this situation we decided to introduce separated bus. It can contain up to
16 devices identified by Broadcom specific fields: manufacturer, id, revision
and class.