Thread (15 messages) 15 messages, 3 authors, 2021-03-22

Re: [PATCH v8 11/11] pwm: Add Raspberry Pi Firmware based PWM bus

From: Nicolas Saenz Julienne <hidden>
Date: 2021-03-15 16:13:23
Also in: linux-arm-kernel, linux-devicetree, linux-gpio, linux-input, linux-pwm, lkml

Hi Uwe,

On Fri, 2021-03-12 at 21:12 +0100, Uwe Kleine-König wrote:
Hello Nicolas,
quoted
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020 Nicolas Saenz Julienne [off-list ref]
2021?
Yes.
quoted
+ * For more information on Raspberry Pi's PoE hat see:
+ * https://www.raspberrypi.org/products/poe-hat/
Out of personal interest: Is this hat also able to power a RPi CM4?
I haven't tested it, and can't at the moment (no PoE injector available). But
the physical pin layout, and routing in CM4's IO board fits the hat. So I'd say
yes.
quoted
+ * Limitations:
+ *  - No disable bit, so a disabled PWM is simulated by duty_cycle 0
+ *  - Only normal polarity
+ *  - Fixed 12.5 kHz period
+ *
+ * The current period is completed when HW is reconfigured.
+ */
Other than that as mentioned in the previous round: This looks good,

Reviewed-by: Uwe Kleine-König <redacted>
Thanks!
What is your thought about how to get this series merged?
At least input, staging, armsoc, clk, reset anf firmware are touched. Do you
prepare a branch for merging in the relevant trees (once you have all the
necessary Acks)?
As per Linusw suggestion I'll send a pull request myself into the SoC tree and
hope for the best. :)

Regards,
Nicolas

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