From: Liu Ying <victor.liu@nxp.com>
To: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: tzimmermann@suse.de, airlied@linux.ie, s.hauer@pengutronix.de,
marcel.ziswiler@toradex.com, robh+dt@kernel.org,
linux-imx@nxp.com, laurentiu.palcu@oss.nxp.com,
krzk+dt@kernel.org, guido.gunther@puri.sm, shawnguo@kernel.org,
kernel@pengutronix.de
Subject: [PATCH v10 3/6] dt-bindings: display: imx: Add i.MX8qxp/qm DPR channel binding
Date: Thu, 7 Apr 2022 17:11:53 +0800 [thread overview]
Message-ID: <20220407091156.1211923-4-victor.liu@nxp.com> (raw)
In-Reply-To: <20220407091156.1211923-1-victor.liu@nxp.com>
This patch adds bindings for i.MX8qxp/qm Display Prefetch Resolve Channel.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
---
v9->v10:
* Add Rob's R-b tag.
v8->v9:
* Reference 'interrupts-extended' schema instead of 'interrupts' to require
an additional interrupt(r_rtram_stall) because the reference manual does
mention it, though the driver doesn't get/use it for now.
Reference 'interrupt-names' schema to define the two interrupt names -
'dpr_wrap' and 'r_rtram_stall'.
* Drop Rob's R-b tag, as review is needed.
v7->v8:
* No change.
v6->v7:
* No change.
v5->v6:
* No change.
v4->v5:
* No change.
v3->v4:
* Improve compatible property by using enum instead of oneOf+const. (Rob)
* Add Rob's R-b tag.
v2->v3:
* No change.
v1->v2:
* Use new dt binding way to add clocks in the example.
.../display/imx/fsl,imx8qxp-dprc.yaml | 100 ++++++++++++++++++
1 file changed, 100 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dprc.yaml
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dprc.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dprc.yaml
new file mode 100644
index 000000000000..bd94254c1288
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dprc.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dprc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qm/qxp Display Prefetch Resolve Channel
+
+maintainers:
+ - Liu Ying <victor.liu@nxp.com>
+
+description: |
+ The i.MX8qm/qxp Display Prefetch Resolve Channel(DPRC) is an engine which
+ fetches display data before the display pipeline needs the data to drive
+ pixels in the active display region. This data is transformed, or resolved,
+ from a variety of tiled buffer formats into linear format, if needed.
+ The DPR works with a double bank memory structure. This memory structure is
+ implemented in the Resolve Tile Memory(RTRAM) and the banks are referred to
+ as A and B. Each bank is either 4 or 8 lines high depending on the source
+ frame buffer format.
+
+properties:
+ compatible:
+ enum:
+ - fsl,imx8qxp-dpr-channel
+ - fsl,imx8qm-dpr-channel
+
+ reg:
+ maxItems: 1
+
+ interrupts-extended:
+ items:
+ - description: DPR wrap interrupt
+ - description: |
+ 'r_rtram_stall' interrupt which indicates relevant i.MX8qm/qxp
+ Prefetch Resolve Gasket(PRG) or PRGs are forcing an underflow
+ condition in the RTRAM.
+
+ interrupt-names:
+ items:
+ - const: dpr_wrap
+ - const: r_rtram_stall
+
+ clocks:
+ items:
+ - description: apb clock
+ - description: b clock
+ - description: rtram clock
+
+ clock-names:
+ items:
+ - const: apb
+ - const: b
+ - const: rtram
+
+ fsl,sc-resource:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: The SCU resource ID associated with this DPRC instance.
+
+ fsl,prgs:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description: |
+ List of phandle which points to PRG or PRGs associated with
+ this DPRC instance.
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts-extended
+ - interrupt-names
+ - clocks
+ - clock-names
+ - fsl,sc-resource
+ - fsl,prgs
+ - power-domains
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx8-lpcg.h>
+ #include <dt-bindings/firmware/imx/rsrc.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ dpr-channel@56100000 {
+ compatible = "fsl,imx8qxp-dpr-channel";
+ reg = <0x56100000 0x10000>;
+ interrupts-extended = <&gic GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>,
+ <&dc0_irqsteer 324>;
+ interrupt-names = "dpr_wrap", "r_rtram_stall";
+ clocks = <&dc0_dpr1_lpcg IMX_LPCG_CLK_4>,
+ <&dc0_dpr1_lpcg IMX_LPCG_CLK_5>,
+ <&dc0_rtram1_lpcg IMX_LPCG_CLK_0>;
+ clock-names = "apb", "b", "rtram";
+ fsl,sc-resource = <IMX_SC_R_DC_0_VIDEO0>;
+ fsl,prgs = <&dc0_prg4>, <&dc0_prg5>;
+ power-domains = <&pd IMX_SC_R_DC_0>;
+ };
--
2.25.1
next prev parent reply other threads:[~2022-04-07 9:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-07 9:11 [PATCH v10 0/6] drm/imx: Introduce i.MX8qm/qxp DPU DRM Liu Ying
2022-04-07 9:11 ` [PATCH v10 1/6] dt-bindings: display: imx: Add i.MX8qxp/qm DPU binding Liu Ying
2022-04-07 9:11 ` [PATCH v10 2/6] dt-bindings: display: imx: Add i.MX8qxp/qm PRG binding Liu Ying
2022-04-07 9:11 ` Liu Ying [this message]
2022-04-07 9:11 ` [PATCH v10 4/6] drm/atomic: Avoid unused-but-set-variable warning on for_each_old_plane_in_state Liu Ying
2022-04-07 9:11 ` [PATCH v10 5/6] drm/imx: Introduce i.MX8qm/qxp DPU DRM Liu Ying
2022-04-07 9:11 ` [PATCH v10 6/6] MAINTAINERS: add maintainer for i.MX8qxp DPU DRM driver Liu Ying
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