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There is a case where NULL can be a valid return value for
ti_clk_get_reg_addr, specifically the case where both the provider index
and register offsets are zero. In this case, the current error checking
against a NULL pointer will fail. Thus, change the API to return a
ERR_PTR value in an error case, and change all the users of this API to
check against IS_ERR instead.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Michael Turquette <mturquette@linaro.org>
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Legacy clock data is initialized slightly differently compared to
DT clocks, thus add support for this.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
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When setting the rate of a clock, by default the clock framework will
change the parent of the clock to the most suitable one in
__clk_mux_determine_rate() (most suitable by looking at the clock rate).
This is a rather dangerous default, and causes problems on AM43x when
using display and ethernet. There are multiple ways to select the clock
muxes on AM43x, and some of those clock paths have the same source
clocks for display and ethernet. When changing the clock rate for the
display subsystem, the clock framework decides to change the display mux
from the dedicated display PLL to a shared PLL which is used by the
ethernet, and then changes the rate of the shared PLL, breaking the
ethernet.
As I don't think there ever is a case where we want the clock framework
to automatically change the parent clock of a clock mux, this patch sets
the CLK_SET_RATE_NO_REPARENT for all ti,mux-clocks.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
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ti,mux-clock provides now a binding for basic mux support. This is just
using the basic clock type.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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