[Patch v9 3/4] dt-bindings: memory: tegra: Update validation for reg and reg-names

Ashish Mhetre
2022-04-26T07:39:18Z

From tegra186 onwards, memory controller support multiple channels.
Reg items are updated with address and size of these channels.
Tegra186 has overall 5 memory controller channels. Tegra194 and tegra234
have overall 17 memory controller channels each.
There is 1 reg item for memory controller stream-id registers.
So update the reg minItems and maxItems accordingly in tegra186
devicetree documentation. Also update validation for reg-names added for
these corresponding reg items.
ABI change due to new bindings is intended but backward compatibility is
preserved in driver.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ashish Mhetre <amhetre@nvidia.com>
---
.../nvidia,tegra186-mc.yaml | 80 +++++++++++++++++--
1 file changed, 74 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml
index 13c4c82fd0d3..c7cfa6c2cd81 100644
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml
@@ -34,8 +34,12 @@ properties:
- nvidia,tegra234-mc

reg:
- minItems: 1
- maxItems: 3
+ minItems: 6
+ maxItems: 18
+
+ reg-names:
+ minItems: 6
+ maxItems: 18

interrupts:
items:
@@ -142,7 +146,18 @@ allOf:
then:
properties:
reg:
- maxItems: 1
+ maxItems: 6
+ description: 5 memory controller channels and 1 for stream-id registers
+
+ reg-names:
+ maxItems: 6
+ items:
+ - const: sid
+ - const: broadcast
+ - const: ch0
+ - const: ch1
+ - const: ch2
+ - const: ch3

- if:
properties:
@@ -151,7 +166,30 @@ allOf:
then:
properties:
reg:
- minItems: 3
+ minItems: 18
+ description: 17 memory controller channels and 1 for stream-id registers
+
+ reg-names:
+ minItems: 18
+ items:
+ - const: sid
+ - const: broadcast
+ - const: ch0
+ - const: ch1
+ - const: ch2
+ - const: ch3
+ - const: ch4
+ - const: ch5
+ - const: ch6
+ - const: ch7
+ - const: ch8
+ - const: ch9
+ - const: ch10
+ - const: ch11
+ - const: ch12
+ - const: ch13
+ - const: ch14
+ - const: ch15

- if:
properties:
@@ -160,13 +198,37 @@ allOf:
then:
properties:
reg:
- minItems: 3
+ minItems: 18
+ description: 17 memory controller channels and 1 for stream-id registers
+
+ reg-names:
+ minItems: 18
+ items:
+ - const: sid
+ - const: broadcast
+ - const: ch0
+ - const: ch1
+ - const: ch2
+ - const: ch3
+ - const: ch4
+ - const: ch5
+ - const: ch6
+ - const: ch7
+ - const: ch8
+ - const: ch9
+ - const: ch10
+ - const: ch11
+ - const: ch12
+ - const: ch13
+ - const: ch14
+ - const: ch15

additionalProperties: false

required:
- compatible
- reg
+ - reg-names
- interrupts
- "#address-cells"
- "#size-cells"
@@ -182,7 +244,13 @@ examples:

memory-controller@2c00000 {
compatible = "nvidia,tegra186-mc";
- reg = <0x0 0x02c00000 0x0 0xb0000>;
+ reg = <0x0 0x02c00000 0x0 0x10000>, /* MC-SID */
+ <0x0 0x02c10000 0x0 0x10000>, /* Broadcast channel */
+ <0x0 0x02c20000 0x0 0x10000>, /* MC0 */
+ <0x0 0x02c30000 0x0 0x10000>, /* MC1 */
+ <0x0 0x02c40000 0x0 0x10000>, /* MC2 */
+ <0x0 0x02c50000 0x0 0x10000>; /* MC3 */
+ reg-names = "sid", "broadcast", "ch0", "ch1", "ch2", "ch3";
interrupts = <GIC_SPI 223 IRQ_TYPE_LEVEL_HIGH>;

#address-cells = <2>;
--
2.17.1