serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling
authorTomonori Sakita <tomonori.sakita@sord.co.jp>
Mon, 21 Jan 2019 08:34:16 +0000 (17:34 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 5 Mar 2019 16:58:00 +0000 (17:58 +0100)
commit0baaa08d1e3a68f3ef92ab71aac18c56b51c6430
treeea8aca8d8e7a4d74beb3bbbbc68345e60c688f6a
parent3aeb1d42b3194d66ee432a5daac82569b19436a0
serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling

[ Upstream commit 815d835b7ba46685c316b000013367dacb2b461b ]

Using over-sampling ratio, lpuart can accept baud rate upto uartclk / 4.

Signed-off-by: Tomonori Sakita <tomonori.sakita@sord.co.jp>
Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/tty/serial/fsl_lpuart.c