[PATCH v2 1/2] dt-bindings: mmc: cdns,sdhci: Add CQE support
From: Rohan Joshi via B4 Relay
Date: Wed May 06 2026 - 05:10:08 EST
From: Rohan Joshi <rohan1sj@xxxxxxxxxxx>
Cadence host controller can support CQE. Add optional CQE
register space and reg-names property to cdns sdhci binding
Signed-off-by: Rohan Joshi <rohan1sj@xxxxxxxxxxx>
---
.../devicetree/bindings/mmc/cdns,sdhci.yaml | 41 +++++++---------------
1 file changed, 12 insertions(+), 29 deletions(-)
diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
index 8902e7925eab..79064282fabc 100644
--- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
@@ -26,7 +26,9 @@ properties:
reg-names:
minItems: 1
- maxItems: 2
+ items:
+ - const: hc
+ - const: cqhci
interrupts:
maxItems: 1
@@ -138,22 +140,16 @@ allOf:
items:
- description: Host controller registers
- description: Elba byte-lane enable register for writes
+ reg-names: false
+ required:
+ - resets
else:
properties:
reg:
- oneOf:
- - items:
- - description: Host controller registers
- - items:
- - description: Host controller registers
- - description: CQE (Command Queue Engine) registers
- reg-names:
- oneOf:
- - items:
- - const: sdhci
- - items:
- - const: sdhci
- - const: cqhci
+ minItems: 1
+ items:
+ - description: Host Controller registers
+ - description: CQE (Command Queuing Engine) registers
unevaluatedProperties: false
@@ -161,7 +157,8 @@ examples:
- |
emmc: mmc@5a000000 {
compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
- reg = <0x5a000000 0x400>;
+ reg = <0x5a000000 0x400>, <0x5a000400 0x060>;
+ reg-names = "hc", "cqhci";
interrupts = <0 78 4>;
clocks = <&clk 4>;
bus-width = <8>;
@@ -170,17 +167,3 @@ examples:
mmc-hs400-1_8v;
cdns,phy-dll-delay-sdclk = <0>;
};
-
- - |
- emmc_cqe: mmc@5b000000 {
- compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
- reg = <0x5b000000 0x400>, <0x5b000400 0x060>;
- reg-names = "sdhci", "cqhci";
- interrupts = <0 79 4>;
- clocks = <&clk 4>;
- bus-width = <8>;
- mmc-ddr-1_8v;
- mmc-hs200-1_8v;
- mmc-hs400-1_8v;
- cdns,phy-dll-delay-sdclk = <0>;
- };
--
2.34.1