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| author | Antony Pavlov | 2016-03-17 04:34:13 +0100 |
|---|---|---|
| committer | Ralf Baechle | 2016-04-03 12:32:10 +0200 |
| commit | f7f797cfc6c80a3505d1a316ee9aa3ec329289e9 (patch) | |
| tree | ab947cb91b1da3ef9eab224b395353c4c23aab4b /arch/mips/boot | |
| parent | MIPS: ath79: Fix the ar913x reference clock rate (diff) | |
| download | kernel-qcow2-linux-f7f797cfc6c80a3505d1a316ee9aa3ec329289e9.tar.gz kernel-qcow2-linux-f7f797cfc6c80a3505d1a316ee9aa3ec329289e9.tar.xz kernel-qcow2-linux-f7f797cfc6c80a3505d1a316ee9aa3ec329289e9.zip | |
MIPS: dts: qca: ar9132_tl_wr1043nd_v1.dts: use "ref" for reference clock name
Current ath79 clock.c code does not read reference clock and
pll setup from devicetree. The ar724x_clocks_init() function
recreates the clocks from scratch so devicetree clock
information is dropped. After adding the code which picked up
reference clock from devicetree I have found
that kernel does not boot anymore. The SPI and UART drivers
can't get clk; here are the bootlog error messages:
of_serial: probe of 18020000.uart failed with error -22
ath79-spi: probe of 1f000000.spi failed with error -22
The problem is that clock code assumes that reference clock
name is "ref" but current dts-file uses another name: "oscillator".
This patch fixes the problem by changing external oscillator
dt node name to "ref".
Please note that there is an alternative solution for the problem:
> --- a/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts
> +++ b/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts
> @@ -16,6 +16,7 @@
>
> extosc: oscillator {
> compatible = "fixed-clock";
> + clock-output-names = "ref";
> #clock-cells = <0>;
> clock-frequency = <40000000>;
> };
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Alban Bedel <albeu@free.fr>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12874/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/boot')
| -rw-r--r-- | arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts b/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts index e535ee3c26a4..4f1540e5f963 100644 --- a/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts +++ b/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts @@ -18,7 +18,7 @@ reg = <0x0 0x2000000>; }; - extosc: oscillator { + extosc: ref { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <40000000>; |