linux-toradex.git/arch/mips/ath79/clock.c, branch v4.2.7

MIPS: ath79: Add OF support to the clocks

2015-06-21T19:54:06+00:00

Allow using the SoC clocks in the device tree.

Signed-off-by: Alban Bedel 
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle

MIPS: ath79: Use the common clk API

2015-06-21T19:53:51+00:00

Make the code simpler and open the way for device tree clocks.

[ralf@linux-mips.org: Resolved conflict with 2a552da6 (MIPS/IRQCHIP: Move
irq_chip from arch/mips to drivers/irqchip.)]

Signed-off-by: Alban Bedel 
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker 
Cc: Qais Yousef 
Cc: Wolfram Sang 
Cc: Sergey Ryazanov 
Cc: Gabor Juhos 
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9774/
Signed-off-by: Ralf Baechle

MIPS: ath79: Correctly name the defines for the PLL_FB register

2015-06-21T19:53:49+00:00

This register is named PLL_FB and is not a divider but a multiplier.
To make things less confusing rename the ARxxxx_PLL_DIV_SHIFT and
ARxxxx_PLL_DIV_MASK macros to ARxxxx_PLL_FB_SHIFT and
ARxxxx_PLL_FB_MASK.

Signed-off-by: Alban Bedel 
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker 
Cc: Qais Yousef 
Cc: Wolfram Sang 
Cc: Sergey Ryazanov 
Cc: Gabor Juhos 
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9772/
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

Merge branch 'mips-next-3.9' of git://git.linux-mips.org/pub/scm/john/linux-john into mips-for-linux-next

2013-02-21T11:51:33+00:00