On the A83T, the AHB1 clock has a shared pre-divider on the two
PLL-PERIPH clock parents. To support such instances of shared
pre-dividers, this patch extends the mux clock type to support
multiple variable pre-dividers.
As the pre-dividers are only used to calculate the rate, but
do not participate in the factorization process, this is fairly
straightforward.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Allwinner H5 is a SoC that features a design which keeps the peripheral
compatible with H3, so that it have also a CCU like the one on H3 --
only one bus gate/reset is added, and the mmc sample/output phases are
removed because of MMC controller update.
Add its support in our existing H3 CCU driver.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
When adjusting PLL_CPUX on H3, the PLL is temporarily driven
too high, and the system becomes unstable (oopses or hangs).
Add a notifier to avoid this situation by temporarily switching
to a known stable 24 MHz oscillator.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Tested-by: Lutz Sammer <johns98@gmx.net>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The audio module clocks are supposed to be set according to the sample
rate of the audio stream. The audio PLL provides the clock signal for
these module clocks, and only it is freely tunable.
Set CLK_SET_RATE_PARENT for the audio module clocks so their users can
properly tune the clock rate.
Fixes: 0577e4853b ("clk: sunxi-ng: Add H3 clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Four more SoCs converted to the new clock framework (A31, A31s, A23 and
A33).
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Merge tag 'sunxi-clk-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into clk-next
Pull Allwinner clock driver changes from Maxime Ripard:
Four more SoCs converted to the new clock framework (A31, A31s, A23 and
A33).
* tag 'sunxi-clk-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
clk: sunxi-ng: Add hardware dependency
clk: sunxi-ng: Add A23 CCU
clk: sunxi-ng: Add A33 CCU support
clk: sunxi-ng: Add N-class clocks support
clk: sunxi-ng: mux: Add mux table macro
clk: sunxi-ng: div: Allow to set a maximum
clk: sunxi-ng: div: Add kerneldoc for the _ccu_div structure
clk: sunxi-ng: div: Add mux table macros
clk: sunxi-ng: Add A31/A31s clocks
clk: sunxi-ng: mux: Add clk notifier functions
clk: sunxi-ng: mux: support fixed pre-dividers on multiple parents
clk: sunxi-ng: mux: Add support for mux tables
clk: sunxi-ng: mux: Rename mux macro to be consistent
clk: sunxi-ng: nkm: Add mux to support multiple parents
clk: sunxi-ng: mux: Increase fixed pre-divider div size
The reset register offsets for UART*, I2C* and SCR were off by a few bytes.
Signed-off-by: Jorik Jonker <jorik@kippendief.biz>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Some clocks on the A31 have fixed pre-dividers on multiple parents.
Add support for them.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The code had a typo and got the wrong offset for the hardcoded divider, fix
that.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reported-by: Jean-Francois Moine <moinejf@free.fr>
Reported-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160711203448.18062-1-maxime.ripard@free-electrons.com
