* [PATCH 1/2] ASoC: SOF: mediatek: Add mt8195 dsp clock support
2021-10-20 11:51 [PATCH 0/2] Add code to manage DSP clocks and provide dts-binding document YC Hung
@ 2021-10-20 11:51 ` YC Hung
2021-10-20 11:51 ` [PATCH 2/2] dt-bindings: dsp: mediatek: Add mt8195 DSP binding support YC Hung
1 sibling, 0 replies; 4+ messages in thread
From: YC Hung @ 2021-10-20 11:51 UTC (permalink / raw)
To: broonie, tiwai, robh+dt, matthias.bgg
Cc: yc.hung, alsa-devel, linux-mediatek, linux-arm-kernel,
linux-kernel, devicetree, daniel.baluta, trevor.wu,
allen-kh.cheng
Add adsp clock on/off support on mt8195 platform.
Signed-off-by: YC Hung <yc.hung@mediatek.com>
---
sound/soc/sof/mediatek/mt8195/Makefile | 2 +-
sound/soc/sof/mediatek/mt8195/mt8195-clk.c | 164 +++++++++++++++++++++
sound/soc/sof/mediatek/mt8195/mt8195-clk.h | 29 ++++
sound/soc/sof/mediatek/mt8195/mt8195.c | 23 ++-
4 files changed, 215 insertions(+), 3 deletions(-)
create mode 100644 sound/soc/sof/mediatek/mt8195/mt8195-clk.c
create mode 100644 sound/soc/sof/mediatek/mt8195/mt8195-clk.h
diff --git a/sound/soc/sof/mediatek/mt8195/Makefile b/sound/soc/sof/mediatek/mt8195/Makefile
index 60fca24c068a..650f4bce99b2 100644
--- a/sound/soc/sof/mediatek/mt8195/Makefile
+++ b/sound/soc/sof/mediatek/mt8195/Makefile
@@ -1,4 +1,4 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
-snd-sof-mt8195-objs := mt8195.o mt8195-loader.o
+snd-sof-mt8195-objs := mt8195.o mt8195-clk.o mt8195-loader.o
obj-$(CONFIG_SND_SOC_SOF_MT8195) += snd-sof-mt8195.o
diff --git a/sound/soc/sof/mediatek/mt8195/mt8195-clk.c b/sound/soc/sof/mediatek/mt8195/mt8195-clk.c
new file mode 100644
index 000000000000..1988421f7f7b
--- /dev/null
+++ b/sound/soc/sof/mediatek/mt8195/mt8195-clk.c
@@ -0,0 +1,164 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// Copyright(c) 2021 Mediatek Corporation. All rights reserved.
+//
+// Author: YC Hung <yc.hung@mediatek.com>
+//
+// Hardware interface for mt8195 DSP clock
+
+#include <linux/clk.h>
+#include <linux/pm_runtime.h>
+#include <linux/io.h>
+#include "mt8195.h"
+#include "mt8195-clk.h"
+
+struct clk *clk_handle[ADSP_CLK_NUM];
+
+int platform_parse_clock(struct device *dev)
+{
+ clk_handle[CLK_TOP_ADSP] = devm_clk_get(dev, "adsp_sel");
+ if (IS_ERR(clk_handle[CLK_TOP_ADSP])) {
+ dev_err(dev, "clk_get(\"adsp_sel\") failed\n");
+ return PTR_ERR(clk_handle[CLK_TOP_ADSP]);
+ }
+
+ clk_handle[CLK_TOP_CLK26M] = devm_clk_get(dev, "clk26m_ck");
+ if (IS_ERR(clk_handle[CLK_TOP_CLK26M])) {
+ dev_err(dev, "clk_get(\"clk26m_ck\") failed\n");
+ return PTR_ERR(clk_handle[CLK_TOP_CLK26M]);
+ }
+
+ clk_handle[CLK_TOP_AUDIO_LOCAL_BUS] = devm_clk_get(dev, "audio_local_bus");
+ if (IS_ERR(clk_handle[CLK_TOP_AUDIO_LOCAL_BUS])) {
+ dev_err(dev, "clk_get(\"audio_local_bus\") failed\n");
+ return PTR_ERR(clk_handle[CLK_TOP_AUDIO_LOCAL_BUS]);
+ }
+
+ clk_handle[CLK_TOP_MAINPLL_D7_D2] = devm_clk_get(dev, "mainpll_d7_d2");
+ if (IS_ERR(clk_handle[CLK_TOP_MAINPLL_D7_D2])) {
+ dev_err(dev, "clk_get(\"mainpll_d7_d2\") failed\n");
+ return PTR_ERR(clk_handle[CLK_TOP_MAINPLL_D7_D2]);
+ }
+
+ clk_handle[CLK_SCP_ADSP_AUDIODSP] = devm_clk_get(dev, "scp_adsp_audiodsp");
+ if (IS_ERR(clk_handle[CLK_SCP_ADSP_AUDIODSP])) {
+ dev_err(dev, "clk_get(\"scp_adsp_audiodsp\") failed\n");
+ return PTR_ERR(clk_handle[CLK_SCP_ADSP_AUDIODSP]);
+ }
+
+ clk_handle[CLK_TOP_AUDIO_H] = devm_clk_get(dev, "audio_h");
+ if (IS_ERR(clk_handle[CLK_TOP_AUDIO_H])) {
+ dev_err(dev, "clk_get(\"audio_h_sel\") failed\n");
+ return PTR_ERR(clk_handle[CLK_TOP_AUDIO_H]);
+ }
+
+ return 0;
+}
+
+int adsp_enable_clock(struct device *dev)
+{
+ int ret;
+
+ ret = clk_prepare_enable(clk_handle[CLK_TOP_MAINPLL_D7_D2]);
+ if (ret) {
+ dev_err(dev, "%s clk_prepare_enable(mainpll_d7_d2) fail %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(clk_handle[CLK_TOP_ADSP]);
+ if (ret) {
+ dev_err(dev, "%s clk_prepare_enable(adsp_sel) fail %d\n",
+ __func__, ret);
+ goto disable_mainpll_d7_d2_clk;
+ }
+
+ ret = clk_prepare_enable(clk_handle[CLK_TOP_AUDIO_LOCAL_BUS]);
+ if (ret) {
+ dev_err(dev, "%s clk_prepare_enable(audio_local_bus) fail %d\n",
+ __func__, ret);
+ goto disable_dsp_sel_clk;
+ }
+
+ ret = clk_prepare_enable(clk_handle[CLK_SCP_ADSP_AUDIODSP]);
+ if (ret) {
+ dev_err(dev, "%s clk_prepare_enable(scp_adsp_audiodsp) fail %d\n",
+ __func__, ret);
+ goto disable_audio_local_bus_clk;
+ }
+
+ ret = clk_prepare_enable(clk_handle[CLK_TOP_AUDIO_H]);
+ if (ret) {
+ dev_err(dev, "%s clk_prepare_enable(audio_h) fail %d\n",
+ __func__, ret);
+ goto disable_scp_adsp_audiodsp_clk;
+ }
+
+ return 0;
+
+disable_scp_adsp_audiodsp_clk:
+ clk_disable_unprepare(clk_handle[CLK_SCP_ADSP_AUDIODSP]);
+disable_audio_local_bus_clk:
+ clk_disable_unprepare(clk_handle[CLK_TOP_AUDIO_LOCAL_BUS]);
+disable_dsp_sel_clk:
+ clk_disable_unprepare(clk_handle[CLK_TOP_ADSP]);
+disable_mainpll_d7_d2_clk:
+ clk_disable_unprepare(clk_handle[CLK_TOP_MAINPLL_D7_D2]);
+
+ return ret;
+}
+
+void adsp_disable_clock(struct device *dev)
+{
+ clk_disable_unprepare(clk_handle[CLK_TOP_AUDIO_H]);
+ clk_disable_unprepare(clk_handle[CLK_SCP_ADSP_AUDIODSP]);
+ clk_disable_unprepare(clk_handle[CLK_TOP_AUDIO_LOCAL_BUS]);
+ clk_disable_unprepare(clk_handle[CLK_TOP_ADSP]);
+ clk_disable_unprepare(clk_handle[CLK_TOP_MAINPLL_D7_D2]);
+}
+
+int adsp_default_clk_init(struct device *dev, int enable)
+{
+ int ret = 0;
+
+ dev_dbg(dev, "%s: %s\n", __func__, enable ? "on" : "off");
+
+ if (enable) {
+ ret = clk_set_parent(clk_handle[CLK_TOP_ADSP],
+ clk_handle[CLK_TOP_CLK26M]);
+ if (ret) {
+ dev_err(dev, "failed to set dsp_sel to clk26m: %d\n", ret);
+ return ret;
+ }
+
+ ret = clk_set_parent(clk_handle[CLK_TOP_AUDIO_LOCAL_BUS],
+ clk_handle[CLK_TOP_MAINPLL_D7_D2]);
+ if (ret) {
+ dev_err(dev, "set audio_local_bus failed %d\n", ret);
+ return ret;
+ }
+
+ ret = adsp_enable_clock(dev);
+ if (ret)
+ dev_err(dev, "failed to adsp_enable_clock: %d\n", ret);
+
+ return ret;
+ }
+
+ adsp_disable_clock(dev);
+
+ return ret;
+}
+
+int adsp_clock_on(struct device *dev)
+{
+ /* Open ADSP clock */
+ return adsp_default_clk_init(dev, 1);
+}
+
+int adsp_clock_off(struct device *dev)
+{
+ /* Close ADSP clock */
+ return adsp_default_clk_init(dev, 0);
+}
+
diff --git a/sound/soc/sof/mediatek/mt8195/mt8195-clk.h b/sound/soc/sof/mediatek/mt8195/mt8195-clk.h
new file mode 100644
index 000000000000..f985d141552a
--- /dev/null
+++ b/sound/soc/sof/mediatek/mt8195/mt8195-clk.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/*
+ * Copyright (c) 2021 MediaTek Corporation. All rights reserved.
+ *
+ * Header file for the mt8195 DSP clock definition
+ */
+
+#ifndef __MT8195_CLK_H
+#define __MT8195_CLK_H
+
+/*DSP clock*/
+enum ADSP_CLK_ID {
+ CLK_TOP_ADSP,
+ CLK_TOP_CLK26M,
+ CLK_TOP_AUDIO_LOCAL_BUS,
+ CLK_TOP_MAINPLL_D7_D2,
+ CLK_SCP_ADSP_AUDIODSP,
+ CLK_TOP_AUDIO_H,
+ ADSP_CLK_NUM
+};
+
+int platform_parse_clock(struct device *dev);
+int adsp_default_clk_init(struct device *dev, int enable);
+int adsp_enable_clock(struct device *dev);
+void adsp_disable_clock(struct device *dev);
+int adsp_clock_on(struct device *dev);
+int adsp_clock_off(struct device *dev);
+#endif
diff --git a/sound/soc/sof/mediatek/mt8195/mt8195.c b/sound/soc/sof/mediatek/mt8195/mt8195.c
index 99075598a35a..f323da58057b 100644
--- a/sound/soc/sof/mediatek/mt8195/mt8195.c
+++ b/sound/soc/sof/mediatek/mt8195/mt8195.c
@@ -25,6 +25,7 @@
#include "../adsp_helper.h"
#include "../mediatek-ops.h"
#include "mt8195.h"
+#include "mt8195-clk.h"
static int platform_parse_resource(struct platform_device *pdev, void *data)
{
@@ -231,10 +232,23 @@ static int mt8195_dsp_probe(struct snd_sof_dev *sdev)
if (ret)
return ret;
+ ret = platform_parse_clock(&pdev->dev);
+ if (ret) {
+ dev_err(sdev->dev, "platform_parse_clock failed\n");
+ return -EINVAL;
+ }
+
+ ret = adsp_clock_on(&pdev->dev);
+ if (ret) {
+ dev_err(sdev->dev, "adsp_clock_on fail!\n");
+ return -EINVAL;
+ }
+
ret = adsp_sram_power_on(sdev->dev, true);
if (ret) {
dev_err(sdev->dev, "adsp_sram_power_on fail!\n");
- return ret;
+ ret = -EINVAL;
+ goto exit_clk_disable;
}
ret = adsp_memory_remap_init(&pdev->dev, priv->adsp);
@@ -282,6 +296,8 @@ static int mt8195_dsp_probe(struct snd_sof_dev *sdev)
err_adsp_sram_power_off:
adsp_sram_power_on(&pdev->dev, false);
+exit_clk_disable:
+ adsp_clock_off(&pdev->dev);
return ret;
}
@@ -290,7 +306,10 @@ static int mt8195_dsp_remove(struct snd_sof_dev *sdev)
{
struct platform_device *pdev = container_of(sdev->dev, struct platform_device, dev);
- return adsp_sram_power_on(&pdev->dev, false);
+ adsp_sram_power_on(&pdev->dev, false);
+ adsp_clock_off(&pdev->dev);
+
+ return 0;
}
/* on mt8195 there is 1 to 1 match between type and BAR idx */
--
2.18.0
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 2/2] dt-bindings: dsp: mediatek: Add mt8195 DSP binding support
2021-10-20 11:51 [PATCH 0/2] Add code to manage DSP clocks and provide dts-binding document YC Hung
2021-10-20 11:51 ` [PATCH 1/2] ASoC: SOF: mediatek: Add mt8195 dsp clock support YC Hung
@ 2021-10-20 11:51 ` YC Hung
2021-10-20 13:50 ` Rob Herring
1 sibling, 1 reply; 4+ messages in thread
From: YC Hung @ 2021-10-20 11:51 UTC (permalink / raw)
To: broonie, tiwai, robh+dt, matthias.bgg
Cc: yc.hung, alsa-devel, linux-mediatek, linux-arm-kernel,
linux-kernel, devicetree, daniel.baluta, trevor.wu,
allen-kh.cheng
This describes the mt8195 DSP device tree node.
Signed-off-by: YC Hung <yc.hung@mediatek.com>
---
.../bindings/dsp/mtk,mt8195-dsp.yaml | 138 ++++++++++++++++++
1 file changed, 138 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
diff --git a/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml b/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
new file mode 100644
index 000000000000..14e1b64d4a32
--- /dev/null
+++ b/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
@@ -0,0 +1,138 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dsp/mtk,mt8195-dsp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek mt8195 DSP core
+
+maintainers:
+ - YC Hung <yc.hung@mediatek.com>
+
+description: |
+ Some boards from mt8195 contain a DSP core used for
+ advanced pre- and post- audio processing.
+properties:
+ compatible:
+ const: mediatek,mt8195-dsp
+
+ reg:
+ maxItems: 2
+
+ reg-names:
+ maxItems: 2
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-names:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: mux for audio dsp clock
+ - description: 26M clock
+ - description: mux for audio dsp local bus
+ - description: default audio dsp local bus clock source
+ - description: clock gate for audio dsp clock
+ - description: mux for audio dsp access external bus
+
+ clock-names:
+ items:
+ - const: adsp_sel
+ - const: clk26m_ck
+ - const: audio_local_bus
+ - const: mainpll_d7_d2
+ - const: scp_adsp_audiodsp
+ - const: audio_h
+
+ power-domains:
+ maxItems: 1
+
+ mboxes:
+ maxItems: 2
+
+ mbox-names:
+ description:
+ Specifies the mailboxes used to communicate with audio DSP
+ items:
+ - const: mbox0
+ - const: mbox1
+
+ memory-region:
+ description:
+ phandle to a node describing reserved memory (System RAM memory)
+ used by DSP (see bindings/reserved-memory/reserved-memory.txt)
+ maxItems: 2
+
+ sound:
+ description:
+ Sound subnode includes ASoC platform, DPTx codec node, and
+ HDMI codec node.
+ maxItems: 3
+
+ properties:
+ mediatek,platform:
+ $ref: "/schemas/types.yaml#/definitions/phandle"
+ description: The phandle of MT8195 ASoC platform.
+
+ mediatek,dptx-codec:
+ $ref: "/schemas/types.yaml#/definitions/phandle"
+ description: The phandle of MT8195 Display Port Tx codec node.
+
+ mediatek,hdmi-codec:
+ $ref: "/schemas/types.yaml#/definitions/phandle"
+ description: The phandle of MT8195 HDMI codec node.
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - interrupt-names
+ - clocks
+ - clock-names
+ - memory-region
+ - power-domains
+ - mbox-names
+ - mboxes
+ - sound
+
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ adsp: adsp@10803000 {
+ compatible = "mediatek,mt8195-dsp";
+ reg = <0x10803000 0x1000>,
+ <0x10840000 0x40000>;
+ reg-names = "cfg", "sram";
+ interrupts = <GIC_SPI 694 IRQ_TYPE_LEVEL_HIGH 0>;
+ interrupt-names = "wdt";
+ clocks = <&topckgen 10>, //CLK_TOP_ADSP
+ <&clk26m>,
+ <&topckgen 107>, //CLK_TOP_AUDIO_LOCAL_BUS
+ <&topckgen 136>, //CLK_TOP_MAINPLL_D7_D2
+ <&scp_adsp 0>, //CLK_SCP_ADSP_AUDIODSP
+ <&topckgen 34>; //CLK_TOP_AUDIO_H
+ clock-names = "adsp_sel",
+ "clk26m_ck",
+ "audio_local_bus",
+ "mainpll_d7_d2",
+ "scp_adsp_audiodsp",
+ "audio_h";
+ memory-region = <&adsp_dma_mem_reserved>,
+ <&adsp_mem_reserved>;
+ power-domains = <&spm 6>; //MT8195_POWER_DOMAIN_ADSP
+ mbox-names = "mbox0", "mbox1";
+ mboxes = <&adsp_mailbox 0>, <&adsp_mailbox 1>;
+ status = "disabled";
+ sound {
+ mediatek,dptx-codec = <&dp_tx>;
+ mediatek,hdmi-codec = <&hdmi0>;
+ mediatek,platform = <&afe>;
+ };
+ };
--
2.18.0
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linux-arm-kernel@lists.infradead.org
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^ permalink raw reply related [flat|nested] 4+ messages in thread