linux-kernel - [PATCH v2 1/6] master reduce clock

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Message-Id: <20231018154809.3304558-2-Frank.Li@nxp.com>
Date:   Wed, 18 Oct 2023 11:48:04 -0400
From:   Frank Li <Frank.Li@....com>
To:     miquel.raynal@...tlin.com
Cc:     Frank.Li@....com, alexandre.belloni@...tlin.com,
        conor.culhane@...vaco.com, imx@...ts.linux.dev, joe@...ches.com,
        linux-i3c@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/6] master reduce clock

---
 drivers/i3c/master/svc-i3c-master.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index e307ba2b965e6..d29de5fe533e6 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -511,7 +511,7 @@ static int svc_i3c_master_bus_init(struct i3c_master_controller *m)
 	 * Using I3C Push-Pull mode, target is 12.5MHz/80ns period.
 	 * Simplest configuration is using a 50% duty-cycle of 40ns.
 	 */
-	ppbaud = DIV_ROUND_UP(40, fclk_period_ns) - 1;
+	ppbaud = DIV_ROUND_UP(500, fclk_period_ns) - 1;
 	pplow = 0;
 
 	/*
@@ -521,7 +521,7 @@ static int svc_i3c_master_bus_init(struct i3c_master_controller *m)
 	 */
 	odhpp = 1;
 	high_period_ns = (ppbaud + 1) * fclk_period_ns;
-	odbaud = DIV_ROUND_UP(240 - high_period_ns, high_period_ns) - 1;
+	odbaud = DIV_ROUND_UP(540 - high_period_ns, high_period_ns) - 1;
 	od_low_period_ns = (odbaud + 1) * high_period_ns;
 
 	switch (bus->mode) {
-- 
2.34.1