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Date: Tue, 9 Aug 2011 22:06:04 -0500
From: Robin Holt <holt@....com>
To: Robin Holt <holt@....com>, Marc Kleine-Budde <mkl@...gutronix.de>,
Wolfgang Grandegger <wg@...ndegger.com>,
U Bhaskar-B22300 <B22300@...escale.com>,
Scott Wood <scottwood@...escale.com>
Cc: Robin Holt <holt@....com>, socketcan-core@...ts.berlios.de,
netdev@...r.kernel.org, PPC list <linuxppc-dev@...ts.ozlabs.org>,
Kumar Gala <galak@...nel.crashing.org>
Subject: [PATCH v10 5/5] [powerpc] Fix up fsl-flexcan device tree binding.
In working with the socketcan developers, we have come to the conclusion
the Documentation...fsl-flexcan.txt device tree documentation needs to
be cleaned up. The driver does not depend upon any properties other
than the required properties so we are removing the file. Additionally,
the p1010*dts* files are not following the standard for node naming in
that they have a trailing -v1.0.
Signed-off-by: Robin Holt <holt@....com>
To: Marc Kleine-Budde <mkl@...gutronix.de>,
To: Wolfgang Grandegger <wg@...ndegger.com>,
To: U Bhaskar-B22300 <B22300@...escale.com>
To: Scott Wood <scottwood@...escale.com>
Cc: socketcan-core@...ts.berlios.de,
Cc: netdev@...r.kernel.org,
Cc: PPC list <linuxppc-dev@...ts.ozlabs.org>
Cc: Kumar Gala <galak@...nel.crashing.org>
---
.../devicetree/bindings/net/can/fsl-flexcan.txt | 61 --------------------
arch/powerpc/boot/dts/p1010rdb.dts | 8 ---
arch/powerpc/boot/dts/p1010si.dtsi | 8 +-
3 files changed, 4 insertions(+), 73 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
diff --git a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
deleted file mode 100644
index 1a729f0..0000000
--- a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
+++ /dev/null
@@ -1,61 +0,0 @@
-CAN Device Tree Bindings
-------------------------
-2011 Freescale Semiconductor, Inc.
-
-fsl,flexcan-v1.0 nodes
------------------------
-In addition to the required compatible-, reg- and interrupt-properties, you can
-also specify which clock source shall be used for the controller.
-
-CPI Clock- Can Protocol Interface Clock
- This CLK_SRC bit of CTRL(control register) selects the clock source to
- the CAN Protocol Interface(CPI) to be either the peripheral clock
- (driven by the PLL) or the crystal oscillator clock. The selected clock
- is the one fed to the prescaler to generate the Serial Clock (Sclock).
- The PRESDIV field of CTRL(control register) controls a prescaler that
- generates the Serial Clock (Sclock), whose period defines the
- time quantum used to compose the CAN waveform.
-
-Can Engine Clock Source
- There are two sources for CAN clock
- - Platform Clock It represents the bus clock
- - Oscillator Clock
-
- Peripheral Clock (PLL)
- --------------
- |
- --------- -------------
- | |CPI Clock | Prescaler | Sclock
- | |---------------->| (1.. 256) |------------>
- --------- -------------
- | |
- -------------- ---------------------CLK_SRC
- Oscillator Clock
-
-- fsl,flexcan-clock-source : CAN Engine Clock Source.This property selects
- the peripheral clock. PLL clock is fed to the
- prescaler to generate the Serial Clock (Sclock).
- Valid values are "oscillator" and "platform"
- "oscillator": CAN engine clock source is oscillator clock.
- "platform" The CAN engine clock source is the bus clock
- (platform clock).
-
-- fsl,flexcan-clock-divider : for the reference and system clock, an additional
- clock divider can be specified.
-- clock-frequency: frequency required to calculate the bitrate for FlexCAN.
-
-Note:
- - v1.0 of flexcan-v1.0 represent the IP block version for P1010 SOC.
- - P1010 does not have oscillator as the Clock Source.So the default
- Clock Source is platform clock.
-Examples:
-
- can0@...00 {
- compatible = "fsl,flexcan-v1.0";
- reg = <0x1c000 0x1000>;
- interrupts = <48 0x2>;
- interrupt-parent = <&mpic>;
- fsl,flexcan-clock-source = "platform";
- fsl,flexcan-clock-divider = <2>;
- clock-frequency = <fixed by u-boot>;
- };
diff --git a/arch/powerpc/boot/dts/p1010rdb.dts b/arch/powerpc/boot/dts/p1010rdb.dts
index 6b33b73..d6a0bb2 100644
--- a/arch/powerpc/boot/dts/p1010rdb.dts
+++ b/arch/powerpc/boot/dts/p1010rdb.dts
@@ -169,14 +169,6 @@
};
};
- can0@...00 {
- fsl,flexcan-clock-source = "platform";
- };
-
- can1@...00 {
- fsl,flexcan-clock-source = "platform";
- };
-
usb@...00 {
phy_type = "utmi";
};
diff --git a/arch/powerpc/boot/dts/p1010si.dtsi b/arch/powerpc/boot/dts/p1010si.dtsi
index 7f51104..20c396d 100644
--- a/arch/powerpc/boot/dts/p1010si.dtsi
+++ b/arch/powerpc/boot/dts/p1010si.dtsi
@@ -141,19 +141,19 @@
};
can0@...00 {
- compatible = "fsl,flexcan-v1.0";
+ compatible = "fsl,p1010-flexcan",
+ "fsl,flexcan";
reg = <0x1c000 0x1000>;
interrupts = <48 0x2>;
interrupt-parent = <&mpic>;
- fsl,flexcan-clock-divider = <2>;
};
can1@...00 {
- compatible = "fsl,flexcan-v1.0";
+ compatible = "fsl,p1010-flexcan",
+ "fsl,flexcan";
reg = <0x1d000 0x1000>;
interrupts = <61 0x2>;
interrupt-parent = <&mpic>;
- fsl,flexcan-clock-divider = <2>;
};
L2: l2-cache-controller@...00 {
--
1.7.2.1
--
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