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[83.8.122.142]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-abf76063ab8sm266955566b.73.2025.03.03.12.54.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Mar 2025 12:54:51 -0800 (PST) From: Artur Weber Date: Mon, 03 Mar 2025 21:54:46 +0100 Subject: [PATCH v3 1/6] dt-bindings: pinctrl: Add bindings for BCM21664 pin controller Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250303-bcm21664-pinctrl-v3-1-5f8b80e4ab51@gmail.com> References: <20250303-bcm21664-pinctrl-v3-0-5f8b80e4ab51@gmail.com> In-Reply-To: <20250303-bcm21664-pinctrl-v3-0-5f8b80e4ab51@gmail.com> To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Ray Jui , Scott Branden , Broadcom internal kernel review list Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Stanislav Jakubek , ~postmarketos/upstreaming@lists.sr.ht, Artur Weber X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1741035289; l=6571; i=aweber.kernel@gmail.com; s=20231030; h=from:subject:message-id; bh=8sKAqg+gUGLkXLgSLhywcAHvI/uGgduy0VUSsfjhpPY=; b=imKoJZCCIN7s1kZiwY9VlOY0d9ZlxhC6MACJCLE2gCmKzCX2GXxfgYRnel7ZOuOnhTjcPCCNF z1t9uCgq/NzB6H4uKSEdbnRTpaqlkqmFL+/tHohNVoKOqO26WCNCHn0 X-Developer-Key: i=aweber.kernel@gmail.com; a=ed25519; pk=RhDBfWbJEHqDibXbhNEBAnc9FMkyznGxX/hwfhL8bv8= 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 --- Changes in v3: - Fix example for I2C pins - Specify bias-pull-up/bias-pull-down as a boolean - Add gpio16/gpio17 to list of I2C pins in slew-rate description - Use additionalProperties: false on pin group and specify valid properties for more strict checking Changes in v2: - Drop "property: true" declarations which had no effect with "unevaluatedProperties: false" - Define property limits for I2C pins only instead of standard pins, making the pin-specific "if" condition significantly smaller --- .../bindings/pinctrl/brcm,bcm21664-pinctrl.yaml | 152 +++++++++++++++++++++ 1 file changed, 152 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..1283a588416d406e6ca5add012cbaa569ef355ef --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/brcm,bcm21664-pinctrl.yaml @@ -0,0 +1,152 @@ +# 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 + - Ray Jui + - Scott Branden + +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; + }; + }; + }; +...