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Message-Id: <20250207-bcm21664-pinctrl-v1-1-e7cfac9b2d3b@gmail.com>
Date: Fri, 07 Feb 2025 21:02:40 +0100
From: Artur Weber <aweber.kernel@...il.com>
To: Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Florian Fainelli <florian.fainelli@...adcom.com>,
Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>,
Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
Christian Daudt <bcm@...thebug.org>, Sherman Yin <syin@...adcom.com>
Cc: linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Stanislav Jakubek <stano.jakubek@...il.com>,
~postmarketos/upstreaming@...ts.sr.ht,
Artur Weber <aweber.kernel@...il.com>
Subject: [PATCH 1/7] dt-bindings: pinctrl: Add bindings for BCM21664 pin
controller
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@...il.com>
---
.../bindings/pinctrl/brcm,bcm21664-pinctrl.yaml | 169 +++++++++++++++++++++
1 file changed, 169 insertions(+)
diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,bcm21664-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/brcm,bcm21664-pinctrl.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..233bea91b640ffa8480637d7304f661b7a4f5d79
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/brcm,bcm21664-pinctrl.yaml
@@ -0,0 +1,169 @@
+# 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@...adcom.com>
+ - Ray Jui <rjui@...adcom.com>
+ - Scott Branden <sbranden@...adcom.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
+ unevaluatedProperties: false
+
+ 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 ]
+
+ slew-rate:
+ description: |
+ Meaning depends on configured pin mux:
+ bsc*clk/pmbscclk or bsc*dat/pmbscdat:
+ 0: Standard (100 kbps) & Fast (400 kbps) mode
+ 1: Highspeed (3.4 Mbps) mode
+ Otherwise:
+ 0: fast slew rate
+ 1: normal slew rate
+
+ bias-disable: true
+ bias-pull-up: true
+ input-disable: true
+ input-enable: true
+
+ required:
+ - pins
+
+ allOf:
+ - $ref: pincfg-node.yaml#
+
+ # Optional properties for standard pins
+ - if:
+ properties:
+ pins:
+ contains:
+ enum: [ adcsyn, batrm, 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, 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, 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 ]
+ then:
+ properties:
+ drive-strength:
+ enum: [ 2, 4, 6, 8, 10, 12, 14, 16 ]
+
+ bias-pull-down: true
+ input-schmitt-enable: true
+ input-schmitt-disable: true
+
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ pinctrl@...04800 {
+ 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 = <720>;
+ input-enable;
+ };
+ };
+ };
+...
--
2.48.1
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