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Message-ID: <454763e4-8965-4f95-b6ee-e6dd4d62c320@gmail.com>
Date: Sun, 19 Oct 2025 14:27:47 +0530
From: Charan Pedumuru <charan.pedumuru@...il.com>
To: Rob Herring <robh@...nel.org>
Cc: Ulf Hansson <ulf.hansson@...aro.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
<conor+dt@...nel.org>, Paul Barker <paul.barker@...cloud.com>,
Marc Murphy <marc.murphy@...cloud.com>, Tony Lindgren <tony@...mide.com>,
Kishon Vijay Abraham I <kishon@...nel.org>, linux-mmc@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-omap@...r.kernel.org
Subject: Re: [PATCH v3 2/2] dt-bindings: mmc: ti,omap2430-sdhci: convert to DT
schema
On 15-10-2025 18:41, Rob Herring wrote:
> On Sat, Oct 11, 2025 at 08:40:24AM +0000, Charan Pedumuru wrote:
>> Convert TI OMAP SDHCI Controller binding to YAML format.
>> Changes during Conversion:
>> - Define new properties like "clocks", "clock-names",
>> "ti,needs-special-reset", "ti,needs-special-hs-handling",
>> "pbias-supply", "cap-mmc-dual-data-rate" and "power-domains" to
>> resolve dtb_check errors.
>> - Remove "pinctrl-names" and "pinctrl-<n>"
>> from required as they are not necessary for all DTS files.
>> - Remove "ti,hwmods" property entirely from the YAML as the
>> DTS doesn't contain this property for the given compatibles and the
>> text binding is misleading.
>> - Add "clocks", "clock-names", "max-frequency" and "ti,needs-special-reset"
>> to the required properties based on the compatible and the text binding
>> doesn't mention these properties as required.
>> - Add missing strings like "default-rev11", "sdr12-rev11", "sdr25-rev11",
>> "hs-rev11", "sdr25-rev11" and "sleep" to pinctrl-names string array
>> to resolve errors detected by dtb_check.
>>
>> Signed-off-by: Charan Pedumuru <charan.pedumuru@...il.com>
>> ---
>> .../devicetree/bindings/mmc/sdhci-omap.txt | 43 -----
>> .../devicetree/bindings/mmc/ti,omap2430-sdhci.yaml | 202 +++++++++++++++++++++
>> 2 files changed, 202 insertions(+), 43 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-omap.txt b/Documentation/devicetree/bindings/mmc/sdhci-omap.txt
>> deleted file mode 100644
>> index f91e341e6b36c410275e6f993dd08400be3fc1f8..0000000000000000000000000000000000000000
>> --- a/Documentation/devicetree/bindings/mmc/sdhci-omap.txt
>> +++ /dev/null
>> @@ -1,43 +0,0 @@
>> -* TI OMAP SDHCI Controller
>> -
>> -Refer to mmc.txt for standard MMC bindings.
>> -
>> -For UHS devices which require tuning, the device tree should have a "cpu_thermal" node which maps to the appropriate thermal zone. This is used to get the temperature of the zone during tuning.
>> -
>> -Required properties:
>> -- compatible: Should be "ti,omap2430-sdhci" for omap2430 controllers
>> - Should be "ti,omap3-sdhci" for omap3 controllers
>> - Should be "ti,omap4-sdhci" for omap4 and ti81 controllers
>> - Should be "ti,omap5-sdhci" for omap5 controllers
>> - Should be "ti,dra7-sdhci" for DRA7 and DRA72 controllers
>> - Should be "ti,k2g-sdhci" for K2G
>> - Should be "ti,am335-sdhci" for am335x controllers
>> - Should be "ti,am437-sdhci" for am437x controllers
>> -- ti,hwmods: Must be "mmc<n>", <n> is controller instance starting 1
>> - (Not required for K2G).
>> -- pinctrl-names: Should be subset of "default", "hs", "sdr12", "sdr25", "sdr50",
>> - "ddr50-rev11", "sdr104-rev11", "ddr50", "sdr104",
>> - "ddr_1_8v-rev11", "ddr_1_8v" or "ddr_3_3v", "hs200_1_8v-rev11",
>> - "hs200_1_8v",
>> -- pinctrl-<n> : Pinctrl states as described in bindings/pinctrl/pinctrl-bindings.txt
>> -
>> -Optional properties:
>> -- dmas: List of DMA specifiers with the controller specific format as described
>> - in the generic DMA client binding. A tx and rx specifier is required.
>> -- dma-names: List of DMA request names. These strings correspond 1:1 with the
>> - DMA specifiers listed in dmas. The string naming is to be "tx"
>> - and "rx" for TX and RX DMA requests, respectively.
>> -
>> -Deprecated properties:
>> -- ti,non-removable: Compatible with the generic non-removable property
>> -
>> -Example:
>> - mmc1: mmc@...9c000 {
>> - compatible = "ti,dra7-sdhci";
>> - reg = <0x4809c000 0x400>;
>> - ti,hwmods = "mmc1";
>> - bus-width = <4>;
>> - vmmc-supply = <&vmmc>; /* phandle to regulator node */
>> - dmas = <&sdma 61 &sdma 62>;
>> - dma-names = "tx", "rx";
>> - };
>> diff --git a/Documentation/devicetree/bindings/mmc/ti,omap2430-sdhci.yaml b/Documentation/devicetree/bindings/mmc/ti,omap2430-sdhci.yaml
>> new file mode 100644
>> index 0000000000000000000000000000000000000000..7683481204b2e222847244b67f9ae2684db93028
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mmc/ti,omap2430-sdhci.yaml
>> @@ -0,0 +1,202 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mmc/ti,omap2430-sdhci.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: TI OMAP SDHCI Controller
>> +
>> +maintainers:
>> + - Kishon Vijay Abraham I <kishon@...com>
>> +
>> +description:
>> + For UHS devices which require tuning, the device tree should have a
>> + cpu_thermal node which maps to the appropriate thermal zone. This
>> + is used to get the temperature of the zone during tuning.
>> +
>> +properties:
>> + compatible:
>> + enum:
>> + - ti,omap2430-sdhci
>> + - ti,omap3-sdhci
>> + - ti,omap4-sdhci
>> + - ti,omap5-sdhci
>> + - ti,dra7-sdhci
>> + - ti,k2g-sdhci
>> + - ti,am335-sdhci
>> + - ti,am437-sdhci
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + interrupts:
>> + maxItems: 1
>> +
>> + clocks:
>> + maxItems: 2
>> +
>> + clock-names:
>> + items:
>> + - const: fck
>> + - const: mmchsdb_fck
>> +
>> + dmas:
>> + maxItems: 2
>> +
>> + dma-names:
>> + items:
>> + - const: tx
>> + - const: rx
>> +
>> + pinctrl-names:
>> + $ref: /schemas/types.yaml#/definitions/string-array
>
> Drop. Already has a type.
Sure, I will remove the type.
>
>> + minItems: 1
>> + maxItems: 14
>> + items:
>> + enum:
>> + - default
>> + - default-rev11
>> + - hs
>> + - sdr12
>> + - sdr12-rev11
>> + - sdr25
>> + - sdr25-rev11
>> + - sdr50
>> + - ddr50-rev11
>> + - sdr104-rev11
>> + - ddr50
>> + - sdr104
>> + - ddr_1_8v-rev11
>> + - ddr_1_8v
>> + - ddr_3_3v
>> + - hs-rev11
>> + - hs200_1_8v-rev11
>> + - hs200_1_8v
>> + - sleep
--
Best Regards,
Charan.
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