This is a note to let you know that I've just added the patch titled
pch_uart: Add uart_clk selection for the MinnowBoard
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pch_uart-add-uart_clk-selection-for-the-minnowboard.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 29692d05647cb7ecea56242241f77291d5624b95 Mon Sep 17 00:00:00 2001
From: Darren Hart <dvhart@xxxxxxxxxxxxxxx>
Date: Tue, 25 Jun 2013 18:53:22 -0700
Subject: pch_uart: Add uart_clk selection for the MinnowBoard
From: Darren Hart <dvhart@xxxxxxxxxxxxxxx>
commit 29692d05647cb7ecea56242241f77291d5624b95 upstream.
Use DMI_BOARD_NAME to determine if we are running on a MinnowBoard and
set the uart clock to 50MHz if so. This removes the need to pass the
user_uartclk to the kernel at boot time.
Signed-off-by: Darren Hart <dvhart@xxxxxxxxxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Peter Waskiewicz <peter.p.waskiewicz.jr@xxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/pch_uart.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -217,6 +217,7 @@ enum {
#define FRI2_64_UARTCLK 64000000 /* 64.0000 MHz */
#define FRI2_48_UARTCLK 48000000 /* 48.0000 MHz */
#define NTC1_UARTCLK 64000000 /* 64.0000 MHz */
+#define MINNOW_UARTCLK 50000000 /* 50.0000 MHz */
struct pch_uart_buffer {
unsigned char *buf;
@@ -398,6 +399,10 @@ static int pch_uart_get_uartclk(void)
strstr(cmp, "nanoETXexpress-TT")))
return NTC1_UARTCLK;
+ cmp = dmi_get_system_info(DMI_BOARD_NAME);
+ if (cmp && strstr(cmp, "MinnowBoard"))
+ return MINNOW_UARTCLK;
+
return DEFAULT_UARTCLK;
}
Patches currently in stable-queue which might be from dvhart@xxxxxxxxxxxxxxx are
queue-3.10/pch_uart-add-uart_clk-selection-for-the-minnowboard.patch
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