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| author | Giuseppe Lippolis <giu.lippolis@gmail.com> | 2016-12-19 18:45:52 +0100 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2016-12-20 09:35:37 +0100 |
| commit | 96a7ee3c80dec5cd86a25f6c72852928370e57b4 (patch) | |
| tree | 46bd4110519c26729b7a3732e4cd0570afe223d0 /target | |
| parent | b5222924059f5146007a02e33d317f2c04d7dd0b (diff) | |
| download | mtk-20170518-96a7ee3c80dec5cd86a25f6c72852928370e57b4.zip mtk-20170518-96a7ee3c80dec5cd86a25f6c72852928370e57b4.tar.gz mtk-20170518-96a7ee3c80dec5cd86a25f6c72852928370e57b4.tar.bz2 | |
ramips: adding registration for si3210
The si3210 is a SLIC device providing a complete analog telephone
interface and therefore frequently used in soho router.
The si3210 have a native spi interface to be controlled by the CPU
but currently there is no dedicated driver in lede.
Adding a registration for this device in spidev allow to control the
device in user space.
This way of patching is also in line with the rationale of the spidev
driver, see: http://marc.info/?t=148145791900001&r=1&w=2
The si3210 has been also added in the DWR-512 DT to properly describe
the HW.
Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/generic/patches-4.4/105-add-linux-spidev-compatible.patch | 15 | ||||
| -rw-r--r-- | target/linux/ramips/dts/DWR-512-B.dts | 13 |
2 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/105-add-linux-spidev-compatible.patch b/target/linux/generic/patches-4.4/105-add-linux-spidev-compatible.patch new file mode 100644 index 0000000..e3f750a --- /dev/null +++ b/target/linux/generic/patches-4.4/105-add-linux-spidev-compatible.patch @@ -0,0 +1,15 @@ +Add the linux,spidev compatible in spidev +Several device in ramips have this binding in the dts + +Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com> +--- +--- a/drivers/spi/spidev.c 2016-12-11 09:43:30.502270523 +0100 ++++ b/drivers/spi/spidev.c 2016-12-11 09:45:54.688430012 +0100 +@@ -695,6 +695,7 @@ static struct class *spidev_class; + static const struct of_device_id spidev_dt_ids[] = { + { .compatible = "rohm,dh2228fv" }, + { .compatible = "lineartechnology,ltc2488" }, ++ { .compatible = "siliconlabs,si3210" }, + {}, + }; + MODULE_DEVICE_TABLE(of, spidev_dt_ids); diff --git a/target/linux/ramips/dts/DWR-512-B.dts b/target/linux/ramips/dts/DWR-512-B.dts index ab3c02a..29e8eaf 100644 --- a/target/linux/ramips/dts/DWR-512-B.dts +++ b/target/linux/ramips/dts/DWR-512-B.dts @@ -104,6 +104,19 @@ }; }; +&spi1 { + status = "okay"; + + spidev@1 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "siliconlabs,si3210"; + + reg = <0>; + spi-max-frequency = <1000000>; + }; +}; + &pinctrl { state_default: pinctrl0 { gpio { |