linux-toradex.git/drivers/clk/samsung, branch v4.9.66

clk: samsung: exynos5433: Add IDs for PHYCLK_MIPIDPHY0_* clocks

2017-11-15T14:53:12+00:00

[ Upstream commit 5ccb58968bf7f46dbd128df88f71838a5a9750b8 ]

Add missing identifiers for phyclk_mipidphy0_bitclkdiv8_phy and
phyclk_mipidphy0_rxclkesc0_phy clocks. Access to those clocks is needed
to setup initial clock configuration for display subsystem in device tree
in order to avoid dependency on the configuration left by the bootloader.

Signed-off-by: Marek Szyprowski 
Acked-by: Krzysztof Kozlowski 
Acked-by: Chanwoo Choi 
Signed-off-by: Sylwester Nawrocki 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

clk/samsung: exynos542x: mark some clocks as critical

2017-08-11T15:49:35+00:00

[ Upstream commit 318fa46cc60d37fec1e87dbf03a82aca0f5ce695 ]

Some parent clocks of the Exynos542x clock blocks, which have separate
power domains (like DISP, MFC, MSC, GSC, FSYS and G2D) must be always
enabled to access any register related to power management unit or devices
connected to it. For the time being, until a proper solution based on
runtime PM is applied, mark those clocks as critical (instead of ignore
unused or even no flags) to prevent disabling them.

Signed-off-by: Marek Szyprowski 
Acked-by: Sylwester Nawrocki 
Reviewed-by: Chanwoo Choi 
Reviewed-by: Javier Martinez Canillas 
Tested-by: Javier Martinez Canillas  [Exynos5800 Peach Pi Chromebook]
Signed-off-by: Stephen Boyd 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

clk/samsung: Use CLK_OF_DECLARE_DRIVER initialization method for CLKOUT

2016-10-28T00:26:54+00:00

The Exynos PMU node is an interrupt, clock and PMU (Power Management Unit)
controller, and these functionalities are supported by different drivers
that matches the same compatible strings.

Since commit 989eafd0b609 ("clk: core: Avoid double initialization of
clocks") the OF core flags clock controllers registered with the
CLK_OF_DECLARE() macro as OF_POPULATED, so platform devices with the same
compatible string will not be registered.

This prevents the PMU platform device to be created, so the Exynos PMU
driver is never probed. This breaks (among other things) Suspend-to-RAM.

Fix this by changing CLKOUT driver initialization method to
CLK_OF_DECLARE_DRIVER(), which doesn't clear the OF_POPULATED flag, so
later a platform device is created and the Exynos PMU platform driver
can be be probed properly.

Fixes: 989eafd0b609 ("clk: core: Avoid double initialization of clocks")
Signed-off-by: Marek Szyprowski 
Reviewed-by: Javier Martinez Canillas 
Reviewed-by: Chanwoo Choi 
Signed-off-by: Stephen Boyd

clk: samsung: clk-exynos-audss: Fix module autoload

2016-10-17T22:21:48+00:00

If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/clk/samsung/clk-exynos-audss.ko | grep alias
alias:          platform:exynos-audss-clk

After this patch:

$ modinfo drivers/clk/samsung/clk-exynos-audss.ko | grep alias
alias:          platform:exynos-audss-clk
alias:          of:N*T*Csamsung,exynos5420-audss-clockC*
alias:          of:N*T*Csamsung,exynos5420-audss-clock
alias:          of:N*T*Csamsung,exynos5410-audss-clockC*
alias:          of:N*T*Csamsung,exynos5410-audss-clock
alias:          of:N*T*Csamsung,exynos5250-audss-clockC*
alias:          of:N*T*Csamsung,exynos5250-audss-clock
alias:          of:N*T*Csamsung,exynos4210-audss-clockC*
alias:          of:N*T*Csamsung,exynos4210-audss-clock

Fixes: 4d252fd5719b ("clk: samsung: Allow modular build of the Audio Subsystem CLKCON driver")
Signed-off-by: Javier Martinez Canillas 
Reviewed-by: Krzysztof Kozlowski 
Tested-by: Krzysztof Kozlowski 
Signed-off-by: Stephen Boyd

clk: samsung: Add support for EPLL on exynos5410

2016-09-09T15:35:13+00:00

This patch adds code instantiating the EPLL, which is used as the
audio subsystem's root clock.
The requirement to specify the external root clock in clocks property
is documented.  Having the consumer 'clocks' property ensures proper
initialization order by explicitly specifying dependencies in DT.
It prevents situations when the SoC's clock controller driver has
initialized, the external oscillator clock is not yet registered
and setting clock frequencies through assigned-clock-rates property
doesn't work properly due to unknown external oscillator frequency.

Signed-off-by: Sylwester Nawrocki 
Reviewed-by: Chanwoo Choi

clk: samsung: clk-exynos-audss: Whitespace and debug trace cleanup

2016-09-09T15:35:12+00:00

There is no need to log probe() completion in normal conditions
so the "setup completed" log is removed.

Signed-off-by: Sylwester Nawrocki

clk: samsung: clk-exynos-audss: Add exynos5410 compatible

2016-09-09T15:35:11+00:00

Exynos5410 Audio Subsystem Clock Controller, comparing to the already
supported IP block revisions, has additionally an I2S_MST divider
so a new compatible string is added.
It is not clear from the Exynos5410 User's Manual released on 2012.03.09
where in the clock tree the I2S_MST clock divider can be found exactly
so this clock is left unimplemented for now.

Signed-off-by: Sylwester Nawrocki

clk: samsung: clk-exynos-audss: controller variant handling rework

2016-09-09T15:35:10+00:00

Then variant handling is reworked to make the code simpler when
more variants are added.

Signed-off-by: Sylwester Nawrocki

clk: samsung: Use common registration function for pll2550x

2016-09-09T15:35:10+00:00

There is no such significant differences in pll2550x PLL type
to justify a separate registration function.  This patch adapts
exynos5440 driver to use the common function and removes
samsung_clk_register_pll2550x().

Signed-off-by: Sylwester Nawrocki 
Reviewed-by: Krzysztof Kozlowski 
Reviewed-by: Chanwoo Choi

clk: samsung: exynos5410: Expose the peripheral DMA gate clocks

2016-09-09T15:35:09+00:00

These clocks are needed in order to use the PL330 peripheral
DMA controllers.

Signed-off-by: Sylwester Nawrocki