[PATCH 1/2] dt-bindings: mmc: mtk-sd: Add eMMC for AN7581

Christian Marangi
2025-01-15T07:30:54Z

Document eMMC compatible for AN7581. This eMMC controller doesn't have
regulator exposed to the system and have a single clock only for source
clock and only default pintctrl.

Rework the schema to permit these new requirements and make supply
optional only for airoha,an7581-mmc compatible.

Also provide an example for airoha,an7581-mmc.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
This depends on patch merged in clk-next
bfe257f9780d8f77045a7da6ec959ee0659d2f98

.../devicetree/bindings/mmc/mtk-sd.yaml | 64 +++++++++++++++++--
1 file changed, 58 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
index f86ebd81f5a5..6dad5455b369 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
@@ -27,6 +27,7 @@ properties:
- mediatek,mt8183-mmc
- mediatek,mt8196-mmc
- mediatek,mt8516-mmc
+ - airoha,an7581-mmc
- items:
- const: mediatek,mt7623-mmc
- const: mediatek,mt2701-mmc
@@ -48,11 +49,11 @@ properties:
clocks:
description:
Should contain phandle for the clock feeding the MMC controller.
- minItems: 2
+ minItems: 1
maxItems: 7

clock-names:
- minItems: 2
+ minItems: 1
maxItems: 7

interrupts:
@@ -72,7 +73,7 @@ properties:
Should at least contain default and state_uhs. To support SDIO in-band wakeup, dat1 pin
will be switched between GPIO mode and SDIO DAT1 mode, state_eint is mandatory in this
scenario.
- minItems: 2
+ minItems: 1
items:
- const: default
- const: state_uhs
@@ -170,9 +171,6 @@ required:
- clock-names
- pinctrl-names
- pinctrl-0
- - pinctrl-1
- - vmmc-supply
- - vqmmc-supply

allOf:
- $ref: mmc-controller.yaml#
@@ -335,6 +333,40 @@ allOf:
- const: axi_cg
- const: ahb_cg

+ - if:
+ properties:
+ compatible:
+ contains:
+ const: airoha,an7581-mmc
+ then:
+ properties:
+ clocks:
+ items:
+ - description: source clock
+
+ clock-names:
+ items:
+ - const: source
+
+ pinctrl-names:
+ items:
+ - const: default
+ else:
+ properties:
+ clocks:
+ minItems: 2
+
+ clock-names:
+ minItems: 2
+
+ pinctrl-names:
+ minItems: 2
+
+ required:
+ - pinctrl-1
+ - vmmc-supply
+ - vqmmc-supply
+
unevaluatedProperties: false

examples:
@@ -389,5 +421,25 @@ examples:
vqmmc-supply = <&mt6397_vgp3_reg>;
mmc-pwrseq = <&wifi_pwrseq>;
};
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/en7523-clk.h>
+ mmc@1fa0e000 {
+ compatible = "airoha,an7581-mmc";
+ reg = <0x1fa0e000 0x1000>,
+ <0x1fa0c000 0x60>;
+ clocks = <&scuclk EN7581_CLK_EMMC>;
+ clock-names = "source";
+ interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc_pins>;
+ bus-width = <4>;
+ max-frequency = <52000000>;
+ disable-wp;
+ cap-mmc-highspeed;
+ non-removable;
+
+ };

...
--
2.45.2