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dts: ite: refactor the it8801 template hierarchy
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The it8801 template is helpful but in the current state it does not
allow changing the device address as that is in the template itself. Fix
that by moving the template content down a level in the hierarchy, so
that it extends the mfd device itself rather than than instantiate it,
then the base instance can have any address, now the only limitation is
that only one instance is possible, but that is probably alright for
now.

Alternatives would be to use a define for the address, or even a
template per address, but this feels like a better compromise for now.
This may also use
zephyrproject-rtos#82825 in the future if
that ever becomes a thing.

Signed-off-by: Fabio Baltieri <[email protected]>
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@fabiobaltieri @GTLin08
fabiobaltieri authored and GTLin08 committed Dec 29, 2024
1 parent fdf0ec2 commit 124ac98
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95 changes: 21 additions & 74 deletions dts/bindings/mfd/ite,it8801-mfd.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -5,15 +5,9 @@ description: |
ITE IT8801 ioexpander multi-function device drivers.
This ioexpander provides a GPIO/PWM/Keyboard function via I2C bus.
An example configuration:
An example configuration using the it8801-common-cfg.dtsi template:
&i2c4 {
status = "okay";
clock-frequency = <I2C_BITRATE_STANDARD>;
pinctrl-0 = <&i2c4_clk_gpe0_default
&i2c4_data_gpe7_default>;
pinctrl-names = "default";
it8801_mfd: it8801@38 {
compatible = "ite,it8801-mfd";
/*
Expand All @@ -23,74 +17,27 @@ description: |
*/
reg = <0x38>;
irq-gpios = <&gpioa 1 0>; /* SMB_INT# */
#address-cells = <1>;
#size-cells = <1>;
ioex_it8801_port0: it8801_port@0 {
compatible = "ite,it8801-gpio";
reg = <0x00 1 /* GPIPSR */
0x05 1 /* GPSOVR */
0x0a 8 /* GPCR */
0x32 1 /* GPISR */
0x37 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <8>;
pin-mask = <0xdb>;
};
ioex_it8801_port1: it8801_port@1 {
compatible = "ite,it8801-gpio";
reg = <0x01 1 /* GPIPSR */
0x06 1 /* GPSOVR */
0x12 8 /* GPCR */
0x33 1 /* GPISR */
0x38 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <8>;
pin-mask = <0x3f>;
};
ioex_it8801_port2: it8801_port@2 {
compatible = "ite,it8801-gpio";
reg = <0x02 1 /* GPIPSR */
0x07 1 /* GPSOVR */
0x1a 8 /* GPCR */
0x34 1 /* GPISR */
0x39 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <8>;
pin-mask = <0x0f>;
};
ioex_it8801_kbd: it8801_kbd@40 {
compatible = "ite,it8801-kbd";
reg = <0x40 1 /* KSOMCR */
0x41 1 /* KSIDR */
0x42 1 /* KSIEER */
0x43 1>; /* KSIIER */
kso-mapping = <0 1 20 3 4 5 6
17 18 16 15 11 12>;
mfdctrl = <&kso18_gp01_default
&kso20_gp23_default>;
row-size = <8>;
col-size = <13>;
kscan_input: kscan-input {
compatible = "zephyr,kscan-input";
};
};
}
#include <ite/it8801-common-cfg.dtsi>
/* sub-devices available at nodelabels:
* - ioex_it8801_port0
* - ioex_it8801_port1
* - ioex_it8801_port2
* - ioex_it8801_kbd
* - ioex_it8801_pwm
*/
&ioex_it8801_kbd {
kso-mapping = <0 1 20 3 4 5 6 17 18 16 15 11 12>;
mfdctrl = <&kso18_gp01_default &kso20_gp23_default>;
row-size = <8>;
col-size = <13>;
};
ioex_it8801_pwm: it8801_pwm@90 {
compatible = "ite,it8801-pwm";
mfdctrl = <&pwm7_gp20_default>;
reg = <0x90 1 /* PWMMCR */
0x94 1>; /* PWMDCR */
channel = <7>;
#pwm-cells = <3>;
};
&ioex_it8801_pwm {
status = "okay";
};
};
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260 changes: 128 additions & 132 deletions dts/riscv/ite/it8801-common-cfg.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -6,149 +6,145 @@

#include <ite/it8801-mfd-map.dtsi>

&it8801_i2c {
it8801_mfd: it8801@38 {
compatible = "ite,it8801-mfd";
reg = <0x38>;
#address-cells = <1>;
#size-cells = <1>;
&it8801_mfd {
#address-cells = <1>;
#size-cells = <1>;

/* GPIO */
ioex_it8801_port0: it8801_port@0 {
compatible = "ite,it8801-gpio";
reg = <0x00 1 /* GPIPSR */
0x05 1 /* GPSOVR */
0x0a 8 /* GPCR */
0x32 1 /* GPISR */
0x37 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <8>;
pin-mask = <0xdb>;
};
/* GPIO */
ioex_it8801_port0: it8801_port@0 {
compatible = "ite,it8801-gpio";
reg = <0x00 1 /* GPIPSR */
0x05 1 /* GPSOVR */
0x0a 8 /* GPCR */
0x32 1 /* GPISR */
0x37 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <8>;
pin-mask = <0xdb>;
};

ioex_it8801_port1: it8801_port@1 {
compatible = "ite,it8801-gpio";
reg = <0x01 1 /* GPIPSR */
0x06 1 /* GPSOVR */
0x12 6 /* GPCR */
0x33 1 /* GPISR */
0x38 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <6>;
pin-mask = <0x3f>;
};
ioex_it8801_port1: it8801_port@1 {
compatible = "ite,it8801-gpio";
reg = <0x01 1 /* GPIPSR */
0x06 1 /* GPSOVR */
0x12 6 /* GPCR */
0x33 1 /* GPISR */
0x38 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <6>;
pin-mask = <0x3f>;
};

ioex_it8801_port2: it8801_port@2 {
compatible = "ite,it8801-gpio";
reg = <0x02 1 /* GPIPSR */
0x07 1 /* GPSOVR */
0x1a 4 /* GPCR */
0x34 1 /* GPISR */
0x39 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <4>;
pin-mask = <0x0f>;
};
ioex_it8801_port2: it8801_port@2 {
compatible = "ite,it8801-gpio";
reg = <0x02 1 /* GPIPSR */
0x07 1 /* GPSOVR */
0x1a 4 /* GPCR */
0x34 1 /* GPISR */
0x39 1>; /* GPIER */
gpio-controller;
#gpio-cells = <2>;
ngpios = <4>;
pin-mask = <0x0f>;
};

/* KBD */
ioex_it8801_kbd: it8801_kbd@40 {
compatible = "ite,it8801-kbd";
status = "disabled";
reg = <0x40 1
0x41 1
0x42 1
0x43 1>;
row-size = <8>;
col-size = <13>;
};
/* KBD */
ioex_it8801_kbd: it8801_kbd@40 {
compatible = "ite,it8801-kbd";
status = "disabled";
reg = <0x40 1
0x41 1
0x42 1
0x43 1>;
row-size = <8>;
col-size = <13>;
};

/* PWM */
ioex_it8801_pwm1: it8801_pwm@60 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x60 1 /* PWMMCR */
0x64 1 /* PWMDCR */
0x66 1 /* PWMPRSL */
0x67 1>; /* PWMPRSM */
mfdctrl = <&pwm1_gp12_default>;
channel = <1>;
#pwm-cells = <3>;
};
/* PWM */
ioex_it8801_pwm1: it8801_pwm@60 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x60 1 /* PWMMCR */
0x64 1 /* PWMDCR */
0x66 1 /* PWMPRSL */
0x67 1>; /* PWMPRSM */
mfdctrl = <&pwm1_gp12_default>;
channel = <1>;
#pwm-cells = <3>;
};

ioex_it8801_pwm2: it8801_pwm@68 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x68 1 /* PWMMCR */
0x6c 1 /* PWMDCR */
0x6e 1 /* PWMPRSL */
0x6f 1>; /* PWMPRSM */
mfdctrl = <&pwm2_gp13_default>;
channel = <2>;
#pwm-cells = <3>;
};
ioex_it8801_pwm2: it8801_pwm@68 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x68 1 /* PWMMCR */
0x6c 1 /* PWMDCR */
0x6e 1 /* PWMPRSL */
0x6f 1>; /* PWMPRSM */
mfdctrl = <&pwm2_gp13_default>;
channel = <2>;
#pwm-cells = <3>;
};

ioex_it8801_pwm3: it8801_pwm@70 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x70 1 /* PWMMCR */
0x74 1 /* PWMDCR */
0x76 1 /* PWMPRSL */
0x77 1>; /* PWMPRSM */
mfdctrl = <&pwm3_gp14_default>;
channel = <3>;
#pwm-cells = <3>;
};
ioex_it8801_pwm3: it8801_pwm@70 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x70 1 /* PWMMCR */
0x74 1 /* PWMDCR */
0x76 1 /* PWMPRSL */
0x77 1>; /* PWMPRSM */
mfdctrl = <&pwm3_gp14_default>;
channel = <3>;
#pwm-cells = <3>;
};

ioex_it8801_pwm4: it8801_pwm@78 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x78 1 /* PWMMCR */
0x7c 1 /* PWMDCR */
0x7e 1 /* PWMPRSL */
0x7f 1>; /* PWMPRSM */
mfdctrl = <&pwm4_gp15_default>;
channel = <4>;
#pwm-cells = <3>;
};
ioex_it8801_pwm4: it8801_pwm@78 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x78 1 /* PWMMCR */
0x7c 1 /* PWMDCR */
0x7e 1 /* PWMPRSL */
0x7f 1>; /* PWMPRSM */
mfdctrl = <&pwm4_gp15_default>;
channel = <4>;
#pwm-cells = <3>;
};

ioex_it8801_pwm7: it8801_pwm@90 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x90 1 /* PWMMCR */
0x94 1 /* PWMDCR */
0x96 1 /* PWMPRSL */
0x97 1>; /* PWMPRSM */
mfdctrl = <&pwm7_gp20_default>;
channel = <7>;
#pwm-cells = <3>;
ioex_it8801_pwm7: it8801_pwm@90 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x90 1 /* PWMMCR */
0x94 1 /* PWMDCR */
0x96 1 /* PWMPRSL */
0x97 1>; /* PWMPRSM */
mfdctrl = <&pwm7_gp20_default>;
channel = <7>;
#pwm-cells = <3>;

};
};

ioex_it8801_pwm8: it8801_pwm@98 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x98 1 /* PWMMCR */
0x9c 1 /* PWMDCR */
0x9e 1 /* PWMPRSL */
0x9f 1>; /* PWMPRSM */
mfdctrl = <&pwm8_gp23_default>;
channel = <8>;
#pwm-cells = <3>;
};
ioex_it8801_pwm8: it8801_pwm@98 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0x98 1 /* PWMMCR */
0x9c 1 /* PWMDCR */
0x9e 1 /* PWMPRSL */
0x9f 1>; /* PWMPRSM */
mfdctrl = <&pwm8_gp23_default>;
channel = <8>;
#pwm-cells = <3>;
};

ioex_it8801_pwm9: it8801_pwm@a0 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0xa0 1 /* PWMMCR */
0xa4 1 /* PWMDCR */
0xa6 1 /* PWMPRSL */
0xa7 1>; /* PWMPRSM */
mfdctrl = <&pwm9_gp22_default>;
channel = <9>;
#pwm-cells = <3>;
};
ioex_it8801_pwm9: it8801_pwm@a0 {
compatible = "ite,it8801-pwm";
status = "disabled";
reg = <0xa0 1 /* PWMMCR */
0xa4 1 /* PWMDCR */
0xa6 1 /* PWMPRSL */
0xa7 1>; /* PWMPRSM */
mfdctrl = <&pwm9_gp22_default>;
channel = <9>;
#pwm-cells = <3>;
};
};
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