diff options
| author | Sander Vanheule <sander@svanheule.net> | 2021-11-14 19:45:31 +0100 |
|---|---|---|
| committer | Stijn Tintel <stijn@linux-ipv6.be> | 2021-11-24 21:42:56 +0200 |
| commit | d3a62bea085ddd959d195671dcbeba9829e47dae (patch) | |
| tree | ced37b8bdaf9191c64562a340fa69274200f5b47 | |
| parent | af2cfbda2bf544666b30b2730e9486b2d6eff76f (diff) | |
| download | upstream-d3a62bea085ddd959d195671dcbeba9829e47dae.tar.gz upstream-d3a62bea085ddd959d195671dcbeba9829e47dae.tar.bz2 upstream-d3a62bea085ddd959d195671dcbeba9829e47dae.zip | |
realtek: Add Lexra bus clock
The CPU peripherals on RTL83xx/RTL930x are connected to the CPU via the
Lexra bus. This bus can provide a clock signal to these peripherals, but
no clock driver is currently available. Instead, use a fixed-clock to
provide the clock frequency, and update the dependent peripherals.
Lexra bus clock frequencies:
- RTL838x: 200MHz
- RTL839x: 200MHz
- RTL930x: 175MHz
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Tested-by: Stijn Segers <foss@volatilesystems.org>
Tested-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: Stijn Tintel <stijn@linux-ipv6.be>
| -rw-r--r-- | target/linux/realtek/dts-5.10/rtl838x.dtsi | 10 | ||||
| -rw-r--r-- | target/linux/realtek/dts-5.10/rtl930x.dtsi | 11 |
2 files changed, 13 insertions, 8 deletions
diff --git a/target/linux/realtek/dts-5.10/rtl838x.dtsi b/target/linux/realtek/dts-5.10/rtl838x.dtsi index a33b6d899e..dc60e12bad 100644 --- a/target/linux/realtek/dts-5.10/rtl838x.dtsi +++ b/target/linux/realtek/dts-5.10/rtl838x.dtsi @@ -68,6 +68,12 @@ bootargs = "console=ttyS0,115200"; }; + lx_clk: lx_clk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; + cpuintc: cpuintc { compatible = "mti,cpu-interrupt-controller"; #address-cells = <0>; @@ -116,7 +122,7 @@ compatible = "ns16550a"; reg = <0x2000 0x100>; - clock-frequency = <200000000>; + clocks = <&lx_clk>; interrupt-parent = <&intc>; interrupts = <31>; @@ -134,7 +140,7 @@ compatible = "ns16550a"; reg = <0x2100 0x100>; - clock-frequency = <200000000>; + clocks = <&lx_clk>; interrupt-parent = <&intc>; interrupts = <30>; diff --git a/target/linux/realtek/dts-5.10/rtl930x.dtsi b/target/linux/realtek/dts-5.10/rtl930x.dtsi index e53f506a95..9e9501d51a 100644 --- a/target/linux/realtek/dts-5.10/rtl930x.dtsi +++ b/target/linux/realtek/dts-5.10/rtl930x.dtsi @@ -80,11 +80,10 @@ interrupt-controller; }; - osc: oscillator { + lx_clk: lx_clk { compatible = "fixed-clock"; - #clock-cells = <1>; + #clock-cells = <0>; clock-frequency = <175000000>; - clock-output-names = "osc"; }; soc: soc { @@ -119,7 +118,7 @@ interrupt-parent = <&intc>; interrupts = <8>; interrupt-names = "ostimer"; - clocks = <&osc 0>; + clocks = <&lx_clk>; }; spi0: spi@1200 { @@ -134,7 +133,7 @@ compatible = "ns16550a"; reg = <0x2000 0x100>; - clock-frequency = <175000000>; + clocks = <&lx_clk>; interrupt-parent = <&intc>; interrupts = <30>; @@ -149,7 +148,7 @@ compatible = "ns16550a"; reg = <0x2100 0x100>; - clock-frequency = <175000000>; + clocks = <&lx_clk>; interrupt-parent = <&intc>; interrupts = <31>; |