From: Wolfram Sang <wsa@the-dreams.de>
To: linux-sh@vger.kernel.org
Subject: [PATCH] ARM: shmobile: r8a7790: switch from scif to scifa
Date: Tue, 16 Sep 2014 16:10:37 +0000 [thread overview]
Message-ID: <1410883837-5611-1-git-send-email-wsa@the-dreams.de> (raw)
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
SCIF and SCIFA can be plexed onto the same wires on Lager board. The
datasheet also describes the wires as SCIFA. So, to make use of the
bigger FIFOs switch to SCIFA instead.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
Currently, I use this patch to check if the DMA RX issue is the same on SCIF
and SCIFA (yes, it is). However, I still think it makes sense to use the bigger
FIFOs. I will check this next week with Bastian's FIFO patches. Until then, I
send this as RFC to collect opinions speaking for/against this change.
arch/arm/boot/dts/r8a7790-lager.dts | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts
index 84dcafa7179b..782f0aa938b3 100644
--- a/arch/arm/boot/dts/r8a7790-lager.dts
+++ b/arch/arm/boot/dts/r8a7790-lager.dts
@@ -19,8 +19,8 @@
compatible = "renesas,lager", "renesas,r8a7790";
aliases {
- serial6 = &scif0;
- serial7 = &scif1;
+ serial6 = &scifa0;
+ serial7 = &scifa1;
};
chosen {
@@ -159,9 +159,9 @@
renesas,function = "du";
};
- scif0_pins: serial0 {
- renesas,groups = "scif0_data";
- renesas,function = "scif0";
+ scifa0_pins: serial0 {
+ renesas,groups = "scifa0_data";
+ renesas,function = "scifa0";
};
ether_pins: ether {
@@ -174,9 +174,9 @@
renesas,function = "intc";
};
- scif1_pins: serial1 {
- renesas,groups = "scif1_data";
- renesas,function = "scif1";
+ scifa1_pins: serial1 {
+ renesas,groups = "scifa1_data";
+ renesas,function = "scifa1";
};
sdhi0_pins: sd0 {
@@ -308,15 +308,15 @@
};
};
-&scif0 {
- pinctrl-0 = <&scif0_pins>;
+&scifa0 {
+ pinctrl-0 = <&scifa0_pins>;
pinctrl-names = "default";
status = "okay";
};
-&scif1 {
- pinctrl-0 = <&scif1_pins>;
+&scifa1 {
+ pinctrl-0 = <&scifa1_pins>;
pinctrl-names = "default";
status = "okay";
--
2.0.0
next reply other threads:[~2014-09-16 16:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-16 16:10 Wolfram Sang [this message]
2014-09-17 14:40 ` [PATCH] ARM: shmobile: r8a7790: switch from scif to scifa Laurent Pinchart
2014-09-17 23:55 ` Simon Horman
2014-09-18 7:57 ` Laurent Pinchart
2014-09-19 3:28 ` Simon Horman
2014-09-30 4:30 ` Simon Horman
2014-09-30 10:40 ` Laurent Pinchart
2014-09-30 10:44 ` Geert Uytterhoeven
2014-09-30 10:48 ` Laurent Pinchart
2014-09-30 23:58 ` Simon Horman
2014-10-02 0:12 ` Simon Horman
2014-10-02 23:14 ` Khiem Nguyen
2014-10-03 0:13 ` Wolfram Sang
2014-10-03 3:25 ` Khiem Nguyen
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