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The sama5d3 slow RC oscillator as a different startup time than all the
previous SoCs. Handle that using its own compatible.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Remove the need for child nodes in the sckc binding and register the whole
sckc tree (3 clocks in total) from the sckc node.
DT backward compatibility is kept by looking for properties in child nodes
when they are not present in the sckc node.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Assume that if the oscillator is enabled (OSC32EN bit is present), the
delay has already elapsed as the bootloader probably waited for the
oscillator to settle. This could waste up to 1.2s.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Starting with sama5d4, the crystal oscillator is always enabled at startup
and the SCKC doesn't have an OSC32EN bit anymore.
Add support for that new controller.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Move all clocks related to the slow clock controller to sckc.c. This avoids
extern definitions and allows to remove sckc.h
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[sboyd@codeaurora.org: Mark some functions static]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
AT91 slow clk is a clk multiplexer.
In some SoCs (sam9x5, sama5, sam9g45 families) this multiplexer can
choose among 2 sources: an internal RC oscillator circuit and an oscillator
using an external crystal.
In other Socs (sam9260 family) the multiplexer source is hardcoded with
the OSCSEL signal.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
