mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-08-31 22:23:05 +00:00
df3a388eee
Add device tree bindings for the pin controller included in the BCM21664 chip. The bindings are based off brcm,bcm11351-pinctrl.yaml; both chips use the same driver, but have different pins, and the BCM21664 has 6 alt modes instead of 4. Signed-off-by: Artur Weber <aweber.kernel@gmail.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://lore.kernel.org/20250303-bcm21664-pinctrl-v3-1-5f8b80e4ab51@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
153 lines
4.8 KiB
YAML
153 lines
4.8 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/pinctrl/brcm,bcm21664-pinctrl.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Broadcom BCM21664 pin controller
|
|
|
|
maintainers:
|
|
- Florian Fainelli <florian.fainelli@broadcom.com>
|
|
- Ray Jui <rjui@broadcom.com>
|
|
- Scott Branden <sbranden@broadcom.com>
|
|
|
|
allOf:
|
|
- $ref: pinctrl.yaml#
|
|
|
|
properties:
|
|
compatible:
|
|
const: brcm,bcm21664-pinctrl
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
patternProperties:
|
|
'-pins$':
|
|
type: object
|
|
additionalProperties: false
|
|
|
|
patternProperties:
|
|
'-grp[0-9]$':
|
|
type: object
|
|
|
|
properties:
|
|
pins:
|
|
description:
|
|
Specifies the name(s) of one or more pins to be configured by
|
|
this node.
|
|
items:
|
|
enum: [ adcsyn, batrm, bsc1clk, bsc1dat, camcs0, camcs1, clk32k,
|
|
clk_cx8, dclk1, dclk4, dclkreq1, dclkreq4, dmic0clk,
|
|
dmic0dq, dsi0te, gpio00, gpio01, gpio02, gpio03, gpio04,
|
|
gpio05, gpio06, gpio07, gpio08, gpio09, gpio10, gpio11,
|
|
gpio12, gpio13, gpio14, gpio15, gpio16, gpio17, gpio18,
|
|
gpio19, gpio20, gpio21, gpio22, gpio23, gpio24, gpio25,
|
|
gpio26, gpio27, gpio28, gpio32, gpio33, gpio34, gpio93,
|
|
gpio94, gps_calreq, gps_hostreq, gps_pablank, gps_tmark,
|
|
icusbdm, icusbdp, lcdcs0, lcdres, lcdscl, lcdsda, lcdte,
|
|
mdmgpio00, mdmgpio01, mdmgpio02, mdmgpio03, mdmgpio04,
|
|
mdmgpio05, mdmgpio06, mdmgpio07, mdmgpio08, mmc0ck,
|
|
mmc0cmd, mmc0dat0, mmc0dat1, mmc0dat2, mmc0dat3, mmc0dat4,
|
|
mmc0dat5, mmc0dat6, mmc0dat7, mmc0rst, mmc1ck, mmc1cmd,
|
|
mmc1dat0, mmc1dat1, mmc1dat2, mmc1dat3, mmc1dat4,
|
|
mmc1dat5, mmc1dat6, mmc1dat7, mmc1rst, pc1, pc2, pmbscclk,
|
|
pmbscdat, pmuint, resetn, rfst2g_mtsloten3g,
|
|
rtxdata2g_txdata3g1, rtxen2g_txdata3g2, rxdata3g0,
|
|
rxdata3g1, rxdata3g2, sdck, sdcmd, sddat0, sddat1, sddat2,
|
|
sddat3, simclk, simdat, simdet, simrst, spi0clk, spi0fss,
|
|
spi0rxd, spi0txd, sri_c, sri_d, sri_e, sspck, sspdi,
|
|
sspdo, sspsyn, stat1, stat2, swclktck, swdiotms, sysclken,
|
|
tdi, tdo, testmode, traceclk, tracedt00, tracedt01,
|
|
tracedt02, tracedt03, tracedt04, tracedt05, tracedt06,
|
|
tracedt07, tracedt08, tracedt09, tracedt10, tracedt11,
|
|
tracedt12, tracedt13, tracedt14, tracedt15, trstb,
|
|
txdata3g0, ubctsn, ubrtsn, ubrx, ubtx ]
|
|
|
|
function:
|
|
description:
|
|
Specifies the pin mux selection.
|
|
enum: [ alt1, alt2, alt3, alt4, alt5, alt6 ]
|
|
|
|
bias-disable: true
|
|
|
|
bias-pull-up:
|
|
type: boolean
|
|
|
|
bias-pull-down:
|
|
type: boolean
|
|
|
|
slew-rate:
|
|
description: |
|
|
Meaning depends on configured pin mux:
|
|
bsc*clk/pmbscclk or bsc*dat/pmbscdat or gpio16/gpio17:
|
|
0: Standard (100 kbps) & Fast (400 kbps) mode
|
|
1: Highspeed (3.4 Mbps) mode
|
|
Otherwise:
|
|
0: fast slew rate
|
|
1: normal slew rate
|
|
|
|
drive-strength:
|
|
enum: [ 2, 4, 6, 8, 10, 12, 14, 16 ]
|
|
|
|
input-enable: true
|
|
input-disable: true
|
|
|
|
input-schmitt-enable: true
|
|
input-schmitt-disable: true
|
|
|
|
required:
|
|
- pins
|
|
|
|
additionalProperties: false
|
|
|
|
allOf:
|
|
- $ref: pincfg-node.yaml#
|
|
# Limitations for I2C pins
|
|
- if:
|
|
properties:
|
|
pins:
|
|
contains:
|
|
enum: [ bsc1clk, bsc1dat, gpio16, gpio17, pmbscclk,
|
|
pmbscdat ]
|
|
then:
|
|
properties:
|
|
drive-strength: false
|
|
bias-pull-down: false
|
|
input-schmitt-enable: false
|
|
input-schmitt-disable: false
|
|
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
|
|
unevaluatedProperties: false
|
|
|
|
examples:
|
|
- |
|
|
pinctrl@35004800 {
|
|
compatible = "brcm,bcm21664-pinctrl";
|
|
reg = <0x35004800 0x7f0>;
|
|
|
|
dev-a-active-pins {
|
|
/* group node defining 1 standard pin */
|
|
std-grp0 {
|
|
pins = "gpio00";
|
|
function = "alt1";
|
|
input-schmitt-enable;
|
|
bias-disable;
|
|
slew-rate = <1>;
|
|
drive-strength = <4>;
|
|
};
|
|
|
|
/* group node defining 2 I2C pins */
|
|
i2c-grp0 {
|
|
pins = "bsc1clk", "bsc1dat";
|
|
function = "alt2";
|
|
bias-pull-up;
|
|
input-enable;
|
|
};
|
|
};
|
|
};
|
|
...
|