From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Tue, 27 Sep 2022 16:24:21 +0000 (+0300)
Subject: pwm: lpss: Add a comment to the bypass field
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d632e864351ac3df3ab4bb224ba27b0634ce93be;p=linux.git

pwm: lpss: Add a comment to the bypass field

Add a comment to the bypass field based on the commit b997e3edca4f
("pwm: lpss: Set enable-bit before waiting for update-bit
to go low").

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
---

diff --git a/drivers/pwm/pwm-lpss.h b/drivers/pwm/pwm-lpss.h
index c344921b2cabc..8e82eb5a7e009 100644
--- a/drivers/pwm/pwm-lpss.h
+++ b/drivers/pwm/pwm-lpss.h
@@ -25,6 +25,11 @@ struct pwm_lpss_boardinfo {
 	unsigned long clk_rate;
 	unsigned int npwm;
 	unsigned long base_unit_bits;
+	/*
+	 * Some versions of the IP may stuck in the state machine if enable
+	 * bit is not set, and hence update bit will show busy status till
+	 * the reset. For the rest it may be otherwise.
+	 */
 	bool bypass;
 	/*
 	 * On some devices the _PS0/_PS3 AML code of the GPU (GFX0) device