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* pwm: atmel-hlcdc: add at91sam9x5 and sama5d3 errata handlingBoris BREZILLON2014-12-041-5/+45
| | | | | | | | | | | at91sam9x5 has an errata forbidding the use of slow clk as a clk source and sama5d3 SoCs has another errata forbidding the use of div1 prescaler. Take both of these erratas into account. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: add support for atmel-hlcdc-pwm deviceBoris Brezillon2014-11-171-0/+259
The HLCDC IP available in some Atmel SoCs (i.e. at91sam9x5, at91sam9n12 or sama5d3 families for instance) provides a PWM device. This driver add support for a PWM chip exposing a single PWM device (which will most likely be used to drive a backlight device). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Tested-by: Anthony Harivel <anthony.harivel@emtrion.de> Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Thierry Reding <thierry.reding@gmail.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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