[PATCH v2 3/4] dt-bindings: mmc: Add Broadcom optional sdio_freq clock
Kamal Dasu
kdasu.kdev at gmail.com
Wed Apr 27 11:08:52 PDT 2022
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 "max-frequency" specifies a base clock frequency
in Hz that overrides the base clock frequency in the CAPS registers.
Signed-off-by: Kamal Dasu <kdasu.kdev at gmail.com>
---
.../bindings/mmc/brcm,sdhci-brcmstb.yaml | 24 +++++++++++++++----
1 file changed, 19 insertions(+), 5 deletions(-)
diff --git a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
index dccd5ad96981..bf716c0cf096 100644
--- a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
+++ b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
@@ -10,8 +10,6 @@ maintainers:
- Al Cooper <alcooperx at gmail.com>
- Florian Fainelli <f.fainelli at gmail.com>
-allOf:
- - $ref: mmc-controller.yaml#
properties:
compatible:
@@ -42,23 +40,39 @@ 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: improved 150Mhz clock for sdhci controller (Optional clock)
clock-names:
+ minItems: 1
items:
- const: sw_sdio
+ - const: sdio_freq # Optional clock
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:
+ - max-frequency
+
required:
- compatible
- reg
- interrupts
- clocks
+ - clock-names
unevaluatedProperties: false
--
2.17.1
More information about the linux-arm-kernel
mailing list