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linux-rolling-lts
linux/drivers/pwm
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Erik Schumacher 767975d749 pwm: imx-tpm: Use correct MODULO value for EPWM mode 
commit cc6a931d1f upstream.

The modulo register defines the period of the edge-aligned PWM mode
(which is the only mode implemented). The reference manual states:
"The EPWM period is determined by (MOD + 0001h) ..." So the value that
is written to the MOD register must therefore be one less than the
calculated period length. Return -EINVAL if the calculated length is
already zero.
A correct MODULO value is particularly relevant if the PWM has to output
a high frequency due to a low period value.

Fixes: 738a1cfec2 ("pwm: Add i.MX TPM PWM driver support")
Cc: stable@vger.kernel.org
Signed-off-by: Erik Schumacher <erik.schumacher@iris-sensing.com>
Link: https://lore.kernel.org/r/1a3890966d68b9f800d457cbf095746627495e18.camel@iris-sensing.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-14 13:19:35 +01:00
..
core.c pwm: Rename pwm_apply_state() to pwm_apply_might_sleep() 2024-06-12 11:12:24 +02:00
Kconfig mfd: rz-mtu3: Link time dependencies 2023-08-18 21:48:04 +01:00
Makefile pwm: Add Renesas RZ/G2L MTU3a PWM driver 2023-06-23 15:46:29 +02:00
pwm-ab8500.c pwm: ab8500: Fix error code in probe() 2023-06-23 15:43:49 +02:00
pwm-apple.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-atmel-hlcdc.c pwm: atmel-hlcdc: Fix clock imbalance related to suspend support 2024-03-26 18:19:26 -04:00
pwm-atmel-tcb.c pwm: atmel-tcb: Fix race condition and convert to guards 2024-08-03 08:53:23 +02:00
pwm-atmel.c pwm: atmel: Simplify using devm functions 2023-07-28 10:15:44 +02:00
pwm-bcm2835.c pwm: bcm2835: Convert to platform remove callback returning void 2023-03-30 16:26:25 +02:00
pwm-bcm-iproc.c pwm: bcm-iproc: Convert to platform remove callback returning void 2023-03-30 16:26:24 +02:00
pwm-bcm-kona.c pwm: bcm-kona: Consistently name pwm_chip variables "chip" 2023-07-21 20:23:31 +02:00
pwm-berlin.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-brcmstb.c pwm: brcmstb: Utilize appropriate clock APIs in suspend/resume 2023-11-20 11:59:34 +01:00
pwm-clk.c pwm: clk: Use the devm_clk_get_prepared() helper function 2023-06-23 15:34:33 +02:00
pwm-clps711x.c pwm: clps71xx: Implement .apply() callback 2022-04-22 18:52:30 +02:00
pwm-crc.c pwm: crc: Consistently name pwm_chip variables "chip" 2023-07-21 20:23:31 +02:00
pwm-cros-ec.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-dwc.c pwm: dwc: Use devm_pwmchip_add() 2023-02-20 12:26:35 +01:00
pwm-ep93xx.c pwm: ep93xx: Simplify using devm_pwmchip_add() 2021-09-02 21:38:41 +02:00
pwm-fsl-ftm.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-hibvt.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-img.c pwm: img: fix pwm clock lookup 2024-04-03 15:28:52 +02:00
pwm-imx1.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-imx27.c pwm: imx27: Propagate errors in .get_state() to the caller 2022-12-06 12:46:26 +01:00
pwm-imx-tpm.c pwm: imx-tpm: Use correct MODULO value for EPWM mode 2024-11-14 13:19:35 +01:00
pwm-intel-lgm.c pwm: Make .get_state() callback return an error code 2022-12-06 12:46:22 +01:00
pwm-iqs620a.c pwm: iqs620a: Explicitly set .polarity in .get_state() 2023-03-23 14:44:41 +01:00
pwm-jz4740.c pwm: jz4740: Don't use dev_err_probe() in .request() 2024-01-25 15:35:46 -08:00
pwm-keembay.c pwm: Make .get_state() callback return an error code 2022-12-06 12:46:22 +01:00
pwm-lp3943.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-lpc18xx-sct.c pwm: lpc18xx-sct: Simplify using devm_clk_get_enabled() 2023-07-28 09:38:04 +02:00
pwm-lpc32xx.c pwm: lpc32xx: Remove handling of PWM channels 2023-08-22 10:14:16 +02:00
pwm-lpss-pci.c pwm: lpss: Rename pwm_lpss_probe() --> devm_pwm_lpss_probe() 2022-11-22 16:36:27 +02:00
pwm-lpss-platform.c pwm: lpss-platform: Convert to platform remove callback returning void 2023-03-30 16:26:32 +02:00
pwm-lpss.c pwm: Changes for v6.2-rc1 2022-12-21 09:41:28 -08:00
pwm-lpss.h pwm: lpss: Allow other drivers to enable PWM LPSS 2022-11-22 16:36:27 +02:00
pwm-mediatek.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-meson.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-microchip-core.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-mtk-disp.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-mxs.c pwm: mxs: Simplify using devm_pwmchip_add() 2021-09-02 21:38:45 +02:00
pwm-ntxec.c pwm: ntxec: Use device_set_of_node_from_dev() 2023-07-28 09:39:02 +02:00
pwm-omap-dmtimer.c pwm: omap-dmtimer: Convert to platform remove callback returning void 2023-03-30 16:26:33 +02:00
pwm-pca9685.c pwm: pca9685: Switch i2c driver back to use .probe() 2023-06-23 15:44:00 +02:00
pwm-pxa.c pwm: pxa: Don't reimplement of_device_get_match_data() 2023-07-28 09:38:18 +02:00
pwm-raspberrypi-poe.c pwm: Make .get_state() callback return an error code 2022-12-06 12:46:22 +01:00
pwm-rcar.c pwm: rcar: Drop of_match_ptr for ID table 2023-04-06 15:41:24 +02:00
pwm-renesas-tpu.c pwm: renesas-tpu: Improve precision of period and duty_cycle calculation 2022-05-20 16:18:40 +02:00
pwm-rockchip.c pwm: rockchip: Consistently name pwm_chip variables "chip" 2023-07-21 20:23:31 +02:00
pwm-rz-mtu3.c pwm: rz-mtu3: Fix build warning 'num_channel_ios' not described 2023-07-28 09:24:43 +02:00
pwm-samsung.c pwm: samsung: Convert to platform remove callback returning void 2023-03-30 16:26:34 +02:00
pwm-sifive.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-sl28cpld.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-spear.c pwm: spear: Convert to platform remove callback returning void 2023-03-30 16:26:35 +02:00
pwm-sprd.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-sti.c pwm: sti: Simplify probe function using devm functions 2024-06-12 11:11:46 +02:00
pwm-stm32-lp.c pwm: stm32-lp: Drop of_match_ptr for ID table 2023-04-06 15:42:22 +02:00
pwm-stm32.c pwm: stm32: Always do lazy disabling 2024-08-03 08:53:22 +02:00
pwm-stmpe.c pwm: stmpe: Handle errors when disabling the signal 2023-07-28 09:49:18 +02:00
pwm-sun4i.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-sunplus.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-tegra.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-tiecap.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-tiehrpwm.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-twl-led.c pwm: Rename pwm_apply_state() to pwm_apply_might_sleep() 2024-06-12 11:12:24 +02:00
pwm-twl.c pwm: twl: Implement .apply() callback 2021-11-17 17:12:42 +01:00
pwm-visconti.c pwm: Explicitly include correct DT includes 2023-07-24 13:28:05 +02:00
pwm-vt8500.c pwm: Rename pwm_apply_state() to pwm_apply_might_sleep() 2024-06-12 11:12:24 +02:00
pwm-xilinx.c pwm: xilinx: Convert to platform remove callback returning void 2023-03-30 16:26:40 +02:00
sysfs.c pwm: Rename pwm_apply_state() to pwm_apply_might_sleep() 2024-06-12 11:12:24 +02:00