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Date:   Sun,  3 Jan 2021 14:55:17 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Arnd Bergmann <arnd@...db.de>
Cc:     Krzysztof Kozlowski <krzk@...nel.org>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Colin Ian King <colin.king@...onical.com>,
        CK Hu <ck.hu@...iatek.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] phy: mediatek: allow compile-testing the dsi phy

From: Arnd Bergmann <arnd@...db.de>

Randconfig builds show another broken dependency:

WARNING: unmet direct dependencies detected for PHY_MTK_MIPI_DSI
  Depends on [n]: ARCH_MEDIATEK [=n] && OF [=y]
  Selected by [m]:
  - DRM_MEDIATEK [=m] && HAS_IOMEM [=y] && DRM [=m] && (ARCH_MEDIATEK [=n] || ARM [=y] && COMPILE_TEST [=y]) && COMMON_CLK [=y] &&
HAVE_ARM_SMCCC [=y] && OF [=y] && MTK_MMSYS [=y]

This is similar to the hdmi driver I fixed earlier, and I guess the
common-clk bug would sooner or later also manifest here, so just use
the exact same solution I chose for the other driver, and hope that
any future drivers just copy it from here.

Fixes: 90f80d95992f ("phy: mediatek: Move mtk_mipi_dsi_phy driver into drivers/phy/mediatek folder")
Fixes: f5f6e01f9164 ("phy: mediatek: allow compile-testing the hdmi phy")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/phy/mediatek/Kconfig | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/mediatek/Kconfig b/drivers/phy/mediatek/Kconfig
index d38def43b1bf..55f8e6c048ab 100644
--- a/drivers/phy/mediatek/Kconfig
+++ b/drivers/phy/mediatek/Kconfig
@@ -49,7 +49,9 @@ config PHY_MTK_HDMI
 
 config PHY_MTK_MIPI_DSI
 	tristate "MediaTek MIPI-DSI Driver"
-	depends on ARCH_MEDIATEK && OF
+	depends on ARCH_MEDIATEK || COMPILE_TEST
+	depends on COMMON_CLK
+	depends on OF
 	select GENERIC_PHY
 	help
 	  Support MIPI DSI for Mediatek SoCs.
-- 
2.29.2

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