If we try to enable a gate clock that doesn't exist, we used to just
fail silently. This may make sense for early bringup of some core
peripherals that we know are already enabled, but it only makes
debugging missing clocks more difficult.
Bubble up errors now that qcom_gate_clk_en() can return an error code to
catch any still-missing clocks and make it easier to find missing ones
as more complicated peripherals are enabled.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250314-sc7280-more-clocks-v1-1-ead54487c38e@linaro.org
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Add the GCC and TCSRCC clock driver for the SM8550 SoC.
The GCC driver uses the clk-qcom infrastructure to support GDSCs,
Resets and gates. While the TCSRCC is a simpler clock driver which
only supports gates.
The GCC enable and set_rate callbacks contains some tweaks to
setup clocks for Debug UART, SDCard controller and USB.
The TCSRCC gates returns the XO frequency, which is used by the
Synopsys eUSB2 driver to determine the PHY configuration.
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
