mbox series

[V12,0/5] Add i.MX7ULP EVK PWM backlight support

Message ID 1557408252-21281-1-git-send-email-Anson.Huang@nxp.com
Headers show
Series Add i.MX7ULP EVK PWM backlight support | expand

Message

Anson Huang May 9, 2019, 1:29 p.m. UTC 
i.MX7ULP EVK board has MIPI-DSI display, its backlight is supplied by
TPM PWM module, this patch set enables i.MX7ULP TPM PWM driver support
and also add backlight support for MIPI-DSI display.

Changes since V11:
	- ONLY add a function comment in drivers/pwm/pwm-imx-tpm.c

Anson Huang (5):
  dt-bindings: pwm: Add i.MX TPM PWM binding
  pwm: Add i.MX TPM PWM driver support
  ARM: imx_v6_v7_defconfig: Add TPM PWM support by default
  ARM: dts: imx7ulp: Add tpm pwm support
  ARM: dts: imx7ulp-evk: Add backlight support

 .../devicetree/bindings/pwm/imx-tpm-pwm.txt        |  22 +
 arch/arm/boot/dts/imx7ulp-evk.dts                  |  20 +
 arch/arm/boot/dts/imx7ulp.dtsi                     |  10 +
 arch/arm/configs/imx_v6_v7_defconfig               |   1 +
 drivers/pwm/Kconfig                                |  11 +
 drivers/pwm/Makefile                               |   1 +
 drivers/pwm/pwm-imx-tpm.c                          | 448 +++++++++++++++++++++
 7 files changed, 513 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt
 create mode 100644 drivers/pwm/pwm-imx-tpm.c

Comments

Thierry Reding May 9, 2019, 3:02 p.m. UTC | #1 
On Thu, May 09, 2019 at 01:29:19PM +0000, Anson Huang wrote:
> Add i.MX TPM(Low Power Timer/Pulse Width Modulation Module) PWM binding.
> 
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> No change.
> ---
>  .../devicetree/bindings/pwm/imx-tpm-pwm.txt        | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt

Applied, thanks.

Thierry
Thierry Reding May 9, 2019, 3:02 p.m. UTC | #2 
On Thu, May 09, 2019 at 01:29:29PM +0000, Anson Huang wrote:
> i.MX7ULP has TPM(Low Power Timer/Pulse Width Modulation Module)
> inside, it can support multiple PWM channels, all the channels
> share same counter and period setting, but each channel can
> configure its duty and polarity independently.
> 
> There are several TPM modules in i.MX7ULP, the number of channels
> in TPM modules are different, it can be read from each TPM module's
> PARAM register.
> 
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> ---
> Changes since V11:
> 	- ONLY add function comment to pwm_imx_tpm_round_state(), no code change.
> ---
>  drivers/pwm/Kconfig       |  11 ++
>  drivers/pwm/Makefile      |   1 +
>  drivers/pwm/pwm-imx-tpm.c | 448 ++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 460 insertions(+)
>  create mode 100644 drivers/pwm/pwm-imx-tpm.c

Applied, thanks.

Thierry