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authorKamal Dasu <[email protected]>2022-05-20 14:31:07 -0400
committerUlf Hansson <[email protected]>2022-07-12 12:25:33 +0200
commit2f8690ef64128bcbda24f0c426dff59835df7fbf (patch)
tree45cecf401245c0b4ae5f3a5e1eb6fdfb46d6ecc5
parent8574adf5222d786b747022c6edcbcdddf409a139 (diff)
dt-bindings: mmc: Add Broadcom optional sdio_freq clock
The 72116B0 has improved SDIO controllers that allow the max clock rate to be increased from a max of 100MHz to a max of 150MHz. Optional "sdio_freq" clock is used to drive the bus clock if present optional property "clock-frequency" specifies a base clock frequency in Hz that overrides the base clock frequency in the CAPS registers. Signed-off-by: Kamal Dasu <[email protected]> Reviewed-by: Krzysztof Kozlowski <[email protected]> Acked-by: Florian Fainelli <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Ulf Hansson <[email protected]>
-rw-r--r--Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml32
1 files changed, 26 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
index 5ecdac9de484..dead421e17d6 100644
--- a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
+++ b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
@@ -10,9 +10,6 @@ maintainers:
- Al Cooper <[email protected]>
- Florian Fainelli <[email protected]>
-allOf:
- - $ref: mmc-controller.yaml#
-
properties:
compatible:
oneOf:
@@ -42,23 +39,46 @@ properties:
maxItems: 1
clocks:
- maxItems: 1
- description:
- handle to core clock for the sdhci controller.
+ minItems: 1
+ items:
+ - description: handle to core clock for the sdhci controller
+ - description: handle to improved 150Mhz clock for sdhci controller (Optional clock)
clock-names:
+ minItems: 1
items:
- const: sw_sdio
+ - const: sdio_freq # Optional clock
+
+ clock-frequency:
+ description:
+ Maximum operating frequency of sdio_freq sdhci controller clock
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 100000000
+ maximum: 150000000
sdhci,auto-cmd12:
type: boolean
description: Specifies that controller should use auto CMD12
+allOf:
+ - $ref: mmc-controller.yaml#
+ - if:
+ properties:
+ clock-names:
+ contains:
+ const: sdio_freq
+
+ then:
+ required:
+ - clock-frequency
+
required:
- compatible
- reg
- interrupts
- clocks
+ - clock-names
unevaluatedProperties: false