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| author | Marek Behún <marek.behun@nic.cz> | 2018-04-24 17:21:25 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2018-05-14 10:00:15 +0200 |
| commit | 82a248df9af7057152a1359e7405585419accc1e (patch) | |
| tree | 04e92d50592430990554e67d5fe61c80336a4d8e /arch | |
| parent | 7288182aa6c11e4b0b2783cd4c7762f93f12cb64 (diff) | |
| download | u-boot-82a248df9af7057152a1359e7405585419accc1e.tar.gz u-boot-82a248df9af7057152a1359e7405585419accc1e.tar.xz u-boot-82a248df9af7057152a1359e7405585419accc1e.zip | |
driver: clk: Add support for clocks on Armada 37xx
The drivers are based on Linux driver by Gregory Clement.
The TBG clocks support only the .get_rate method.
- since setting rate is not supported, the driver computes the rates
when probing and so subsequent calls to the .get_rate method do not
read the corresponding registers again
The peripheral clocks support methods .get_rate, .enable and .disable.
- the .set_parent method theoretically could be supported on some clocks
(the parent would have to be one of the TBG clocks)
- the .set_rate method would have to try all the divider values to find
the best approximation of a given rate, and it doesn't seem like
this should be needed in U-Boot, therefore not implemented
Signed-off-by: Marek Behun <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/dts/armada-37xx.dtsi | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/dts/armada-37xx.dtsi b/arch/arm/dts/armada-37xx.dtsi index 040e8568e6..c72fd25abc 100644 --- a/arch/arm/dts/armada-37xx.dtsi +++ b/arch/arm/dts/armada-37xx.dtsi @@ -107,6 +107,26 @@ status = "disabled"; }; + nb_periph_clk: nb-periph-clk@13000 { + compatible = "marvell,armada-3700-periph-clock-nb"; + reg = <0x13000 0x100>; + clocks = <&tbg 0>, <&tbg 1>, <&tbg 2>, <&tbg 3>; + #clock-cells = <1>; + }; + + sb_periph_clk: sb-periph-clk@18000 { + compatible = "marvell,armada-3700-periph-clock-sb"; + reg = <0x18000 0x100>; + clocks = <&tbg 0>, <&tbg 1>, <&tbg 2>, <&tbg 3>; + #clock-cells = <1>; + }; + + tbg: tbg@13200 { + compatible = "marvell,armada-3700-tbg-clock"; + reg = <0x13200 0x100>; + #clock-cells = <1>; + }; + pinctrl_nb: pinctrl-nb@13800 { compatible = "marvell,armada3710-nb-pinctrl", "syscon", "simple-mfd"; |