dt-bindings: mmc: sdhci-msm: add ICE registers and clock

Document the bindings for the registers and clock for the MMC instance
of the Inline Crypto Engine (ICE) on Snapdragon SoCs.  These bindings
are needed in order for sdhci-msm to support inline encryption.

Reviewed-by: Satya Tangirala <satyat@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20210126001456.382989-8-ebiggers@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
index 9fa8a24fbc97d03a825bba2325c2672e380b1ec1..4c7fa6a4ed15cdf9065949707a6a4bb90e1c2bf8 100644 (file)
--- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
@@ -31,10 +31,12 @@ Required properties:
        - SD Core register map (required for controllers earlier than msm-v5)
        - CQE register map (Optional, CQE support is present on SDHC instance meant
                            for eMMC and version v4.2 and above)
+       - Inline Crypto Engine register map (optional)
 - reg-names: When CQE register map is supplied, below reg-names are required
        - "hc" for Host controller register map
        - "core" for SD core register map
        - "cqhci" for CQE register map
+       - "ice" for Inline Crypto Engine register map (optional)
 - interrupts: Should contain an interrupt-specifiers for the interrupts:
        - Host controller interrupt (required)
 - pinctrl-names: Should contain only one value - "default".
@@ -47,6 +49,7 @@ Required properties:
        "xo"    - TCXO clock (optional)
        "cal"   - reference clock for RCLK delay calibration (optional)
        "sleep" - sleep clock for RCLK delay calibration (optional)
+       "ice" - clock for Inline Crypto Engine (optional)
 
 - qcom,ddr-config: Certain chipsets and platforms require particular settings
        for the DDR_CONFIG register. Use this field to specify the register