linux-kernel - [PATCH v4 08/13] memory: mtk-smi: Add clocks for smi-sub-common

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Date:   Tue, 14 Sep 2021 19:36:58 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     Krzysztof Kozlowski <krzk@...nel.org>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Tomasz Figa <tfiga@...omium.org>,
        <linux-mediatek@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <iommu@...ts.linux-foundation.org>, <yong.wu@...iatek.com>,
        <youlin.pei@...iatek.com>, <anan.sun@...iatek.com>,
        <ming-fan.chen@...iatek.com>, <yi.kuo@...iatek.com>,
        <anthony.huang@...iatek.com>, Ikjoon Jang <ikjn@...omium.org>
Subject: [PATCH v4 08/13] memory: mtk-smi: Add clocks for smi-sub-common

SMI sub common only have one output port. thus it has only one gals
clocks(gals0). then, smi-sub-common require the three clocks(apb/smi/gals0)
in has_gals case.

Signed-off-by: Yong Wu <yong.wu@...iatek.com>
---
 drivers/memory/mtk-smi.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
index 5c2bd5795cfd..58d9f7667490 100644
--- a/drivers/memory/mtk-smi.c
+++ b/drivers/memory/mtk-smi.c
@@ -74,10 +74,12 @@ static const char * const mtk_smi_larb_clks[] = {"apb", "smi", "gals"};
 
 /*
  * common: Require these four clocks in has_gals case. Otherwise, only apb/smi are required.
+ * sub common: Require apb/smi/gals0 clocks in has_gals case. Otherwise, only apb/smi are required.
  */
 static const char * const mtk_smi_common_clks[] = {"apb", "smi", "gals0", "gals1"};
 #define MTK_SMI_COM_REQ_CLK_NR		2
 #define MTK_SMI_COM_GALS_REQ_CLK_NR	MTK_SMI_CLK_NR_MAX
+#define MTK_SMI_SUB_COM_GALS_REQ_CLK_NR 3
 
 struct mtk_smi_common_plat {
 	enum mtk_smi_type	type;
@@ -467,8 +469,12 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
 	common->dev = dev;
 	common->plat = of_device_get_match_data(dev);
 
-	if (common->plat->has_gals)
-		clk_required = MTK_SMI_COM_GALS_REQ_CLK_NR;
+	if (common->plat->has_gals) {
+		if (common->plat->type == MTK_SMI_GEN2)
+			clk_required = MTK_SMI_COM_GALS_REQ_CLK_NR;
+		else if (common->plat->type == MTK_SMI_GEN2_SUB_COMM)
+			clk_required = MTK_SMI_SUB_COM_GALS_REQ_CLK_NR;
+	}
 	ret = mtk_smi_dts_clk_init(dev, common, mtk_smi_common_clks, clk_required, 0);
 	if (ret)
 		return ret;
-- 
2.18.0