linux-toradex.git/drivers/clk/clk-max9485.c, branch v6.4 Linux kernel for Apalis and Colibri modules clk: max9485: use simple i2c probe function 2022-04-23T02:28:08+00:00 Stephen Kitt steve@sk2.org 2022-04-07T15:18:25+00:00 55349aedb5daa5ca8f14e485d069b0bb6ea483d5 The i2c probe function here doesn't use the id information provided in its second argument, so the single-parameter i2c probe function ("probe_new") can be used instead. This avoids scanning the identifier tables during probes. Signed-off-by: Stephen Kitt <steve@sk2.org> Link: https://lore.kernel.org/r/20220407151831.2371706-5-steve@sk2.org Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org> 
The i2c probe function here doesn't use the id information provided in
its second argument, so the single-parameter i2c probe function
("probe_new") can be used instead.

This avoids scanning the identifier tables during probes.

Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20220407151831.2371706-5-steve@sk2.org
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
clk: Add driver for MAX9485 2018-07-06T20:44:06+00:00 Daniel Mack daniel@zonque.org 2018-07-06T18:53:03+00:00 33f5104624b96c6514621e63909b5703276b4dac This patch adds a driver for MAX9485, a programmable audio clock generator. The device requires a 27.000 MHz clock input. It can provide a gated buffered output of its input clock and two gated outputs of a PLL that can generate one out of 16 discrete frequencies. There is only one PLL however, so the two gated outputs will always have the same frequency but they can be switched individually. The driver for this device exposes 4 clocks in total: - MAX9485_MCLKOUT: A gated, buffered output of the input clock - MAX9485_CLKOUT: A PLL that can be configured to 16 different discrete frequencies - MAX9485_CLKOUT[1,2]: Two gated outputs for MAX9485_CLKOUT Some PLL output frequencies can be achieved with different register settings. The driver will select the one with lowest jitter in such cases. Signed-off-by: Daniel Mack <daniel@zonque.org> [sboyd@kernel.org: Use local variable for val in max9485_clkout_recalc_rate() and shorten line of max9485_of_clk_get()] Signed-off-by: Stephen Boyd <sboyd@kernel.org> 
This patch adds a driver for MAX9485, a programmable audio clock generator.

The device requires a 27.000 MHz clock input. It can provide a gated
buffered output of its input clock and two gated outputs of a PLL that can
generate one out of 16 discrete frequencies. There is only one PLL however,
so the two gated outputs will always have the same frequency but they can
be switched individually.

The driver for this device exposes 4 clocks in total:

- MAX9485_MCLKOUT:      A gated, buffered output of the input clock
- MAX9485_CLKOUT:       A PLL that can be configured to 16 different
			discrete frequencies
- MAX9485_CLKOUT[1,2]:  Two gated outputs for MAX9485_CLKOUT

Some PLL output frequencies can be achieved with different register
settings. The driver will select the one with lowest jitter in such cases.

Signed-off-by: Daniel Mack <daniel@zonque.org>
[sboyd@kernel.org: Use local variable for val in max9485_clkout_recalc_rate()
and shorten line of max9485_of_clk_get()]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>