linux-kernel - [PATCH 2/2] remoteproc: mediatek: Support mt8195 scp

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Date:   Fri, 9 Jul 2021 20:46:31 +0800
From:   Tinghan Shen <tinghan.shen@...iatek.com>
To:     <ohad@...ery.com>, <bjorn.andersson@...aro.org>,
        <mathieu.poirier@...aro.org>, <robh+dt@...nel.org>,
        <matthias.bgg@...il.com>
CC:     <linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <srv_heupstream@...iatek.com>,
        <tzungbi@...gle.com>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Tinghan Shen <tinghan.shen@...iatek.com>
Subject: [PATCH 2/2] remoteproc: mediatek: Support mt8195 scp

The SCP clock design is changed on mt8195 that doesn't need to control
SCP clock on kernel side.

Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>
---
 drivers/remoteproc/mtk_scp.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 9679cc26895e..c31af75f947a 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -785,11 +785,13 @@ static int scp_probe(struct platform_device *pdev)
 	if (ret)
 		goto destroy_mutex;
 
-	scp->clk = devm_clk_get(dev, "main");
-	if (IS_ERR(scp->clk)) {
-		dev_err(dev, "Failed to get clock\n");
-		ret = PTR_ERR(scp->clk);
-		goto release_dev_mem;
+	if (of_get_property(np, "clocks", NULL)) {
+		scp->clk = devm_clk_get(dev, "main");
+		if (IS_ERR(scp->clk)) {
+			dev_err(dev, "Failed to get clock\n");
+			ret = PTR_ERR(scp->clk);
+			goto release_dev_mem;
+		}
 	}
 
 	/* register SCP initialization IPI */
@@ -877,6 +879,7 @@ static const struct mtk_scp_of_data mt8192_of_data = {
 static const struct of_device_id mtk_scp_of_match[] = {
 	{ .compatible = "mediatek,mt8183-scp", .data = &mt8183_of_data },
 	{ .compatible = "mediatek,mt8192-scp", .data = &mt8192_of_data },
+	{ .compatible = "mediatek,mt8195-scp", .data = &mt8192_of_data },
 	{},
 };
 MODULE_DEVICE_TABLE(of, mtk_scp_of_match);
-- 
2.18.0