linux.git/arch/mips/ath79, branch v3.16.81

MIPS: ath79: make bootconsole wait for both THRE and TEMT

2016-08-22T21:37:53+00:00

commit f5b556c94c8490d42fea79d7b4ae0ecbc291e69d upstream.

This makes the ath79 bootconsole behave the same way as the generic 8250
bootconsole.

Also waiting for TEMT (transmit buffer is empty) instead of just THRE
(transmit buffer is not full) ensures that all characters have been
transmitted before the real serial driver starts reconfiguring the serial
controller (which would sometimes result in garbage being transmitted.)
This change does not cause a visible performance loss.

In addition, this seems to fix a hang observed in certain configurations on
many AR7xxx/AR9xxx SoCs during autoconfig of the real serial driver.

A more complete follow-up patch will disable 8250 autoconfig for ath79
altogether (the serial controller is detected as a 16550A, which is not
fully compatible with the ath79 serial, and the autoconfig may lead to
undefined behavior on ath79.)

Signed-off-by: Matthias Schiffer 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Ben Hutchings

usb: host: remove selects of USB_ARCH_HAS_?HCI

2014-02-18T20:36:38+00:00

USB_ARCH_HAS_EHCI, USB_ARCH_HAS_OHCI, and USB_ARCH_HAS_XHCI were just
removed. Selecting them is a nop. The select statements for these
symbols can be removed too.

Signed-off-by: Paul Bolle 
Acked-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

mips: delete non-required instances of include

2014-01-24T21:39:56+00:00

None of these files are actually using any __init type directives
and hence don't need to include .  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Signed-off-by: Paul Gortmaker 
Signed-off-by: John Crispin 
Patchwork: http://patchwork.linux-mips.org/patch/6320/

MIPS: ath79: Remove ar933x_uart_platform.h header

2013-10-29T20:23:49+00:00

In commit 15ef17f622033455dcf03ae96256e474073a7b11
(tty: ar933x_uart: use the clk API to get the uart
clock), the AR933x UART driver for has been converted
to get the uart clock rate via the clock API and it
does not use the platform data anymore.

Remove the ar933x_uart_platform.h header file and get
rid of the superfluous variable and initialization code
in platform setup.

Signed-off-by: Gabor Juhos 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5832/
Signed-off-by: Ralf Baechle

MIPS: ath79: Switch to the clkdev framework

2013-09-03T21:22:18+00:00

The ath79 code uses static clock devices and
provides its own clk_{get,put} implementations.

Change the code to use dynamically allocated
clock devices and register the clocks within
the clkdev framework.

Additionally, remove the local clk_{get,put}
implementation. The clkdev framework has a
common implementation of those.

Also move the call of ath79_clock_init() from
plat_mem_init() to plat_time_init(). Otherwise
it would not be possible to use memory allocation
functions from ath79clock_init() becasuse the
memory subsystem is not yet initialized when
plat_mem_init() runs.

Signed-off-by: Gabor Juhos 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5780/
Signed-off-by: Ralf Baechle

MIPS: ath79: Use local variables for clock rates

2013-09-03T21:22:18+00:00

Use local variables for ref, cpu, ddr and ahb
rates in SoC specific clock init functions.

The patch has no functional changes, it is
an interim change in preparation of the next
patch.

Signed-off-by: Gabor Juhos 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5781/
Signed-off-by: Ralf Baechle

MIPS: ath79: Use ath79_get_sys_clk_rate to get basic clock rates

2013-09-03T21:22:17+00:00

Instead of accessing the rate field of the static
clock devices directly, use the recently introduced
helper function to get the rate of the basic clocks.

The static ath79_{ahb,cpu,ddr,ref}_clk variables
will be removed by a subsequent patch. The actual
change is in preparation of that.

Also move the clock frequency printing code into
the plat_time_init function. We are getting the
cpu clock rate there already so we can save an
extra call of the helper.

Signed-off-by: Gabor Juhos 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5782/
Signed-off-by: Ralf Baechle

MIPS: ath79: Use a helper function to get system clock rates

2013-09-03T21:22:17+00:00

The ath79 platform uses similar code to get the
rate of various clocks during init. Separate the
similar code into a new helper function and use
that to avoid code duplication.

Signed-off-by: Gabor Juhos 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5778/
Signed-off-by: Ralf Baechle

MIPS: ath79: Use local ref clock rate in ar934x_get_pll_freq

2013-09-03T21:22:17+00:00

The reference clock rate is passed in the first
argument of the function. Use that instead of the
rate of the global ath79_ref_clk variable.

Signed-off-by: Gabor Juhos 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5779/
Signed-off-by: Ralf Baechle

MIPS: ath79: Fix ar933x watchdog clock

2013-09-03T21:22:16+00:00

The watchdog device on the AR933x is connected to
the AHB clock, however the current code uses the
reference clock. Due to the wrong rate, the watchdog
driver can't calculate correct register values for
a given timeout value and the watchdog unexpectedly
restarts the system.

The code uses the wrong value since the initial
commit 04225e1d227c8e68d685936ecf42ac175fec0e54
(MIPS: ath79: add AR933X specific clock init)

The patch fixes the code to use the correct clock
rate to avoid the problem.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau 
Signed-off-by: Gabor Juhos 
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5777/
Signed-off-by: Ralf Baechle