linux-kernel - [PATCH V5 14/16] clk: mediatek: reset: Add infra

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Message-ID: <20220428115620.13512-15-rex-bc.chen@mediatek.com>
Date:   Thu, 28 Apr 2022 19:56:17 +0800
From:   Rex-BC Chen <rex-bc.chen@...iatek.com>
To:     <mturquette@...libre.com>, <sboyd@...nel.org>,
        <matthias.bgg@...il.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>
CC:     <p.zabel@...gutronix.de>,
        <angelogioacchino.delregno@...labora.com>,
        <chun-jie.chen@...iatek.com>, <wenst@...omium.org>,
        <runyang.chen@...iatek.com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Rex-BC Chen <rex-bc.chen@...iatek.com>
Subject: [PATCH V5 14/16] clk: mediatek: reset: Add infra_ao reset support for MT8192/MT8195

The infra_ao reset is needed for MT8192 and MT8195.
- Add mtk_clk_rst_desc for MT8192 and MT8195
- Add register reset controller function for MT8192 infra_ao.
- Move definition of infra reset from cl-mt8183.c to reset.h
  because it's the same definition with MT8192 and MT8195.
- Add new definition of infra reset_4 for MT8192 and MT8195.

Signed-off-by: Rex-BC Chen <rex-bc.chen@...iatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 drivers/clk/mediatek/clk-mt8183.c          |  6 ------
 drivers/clk/mediatek/clk-mt8192.c          | 18 ++++++++++++++++++
 drivers/clk/mediatek/clk-mt8195-infra_ao.c | 15 +++++++++++++++
 drivers/clk/mediatek/reset.h               |  7 +++++++
 4 files changed, 40 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt8183.c b/drivers/clk/mediatek/clk-mt8183.c
index c7d5ffacbd1d..40b53e15411d 100644
--- a/drivers/clk/mediatek/clk-mt8183.c
+++ b/drivers/clk/mediatek/clk-mt8183.c
@@ -18,12 +18,6 @@
 
 #include <dt-bindings/clock/mt8183-clk.h>
 
-/* Infra global controller reset set register */
-#define INFRA_RST0_SET_OFFSET		0x120
-#define INFRA_RST1_SET_OFFSET		0x130
-#define INFRA_RST2_SET_OFFSET		0x140
-#define INFRA_RST3_SET_OFFSET		0x150
-
 static DEFINE_SPINLOCK(mt8183_clk_lock);
 
 static const struct mtk_fixed_clk top_fixed_clks[] = {
diff --git a/drivers/clk/mediatek/clk-mt8192.c b/drivers/clk/mediatek/clk-mt8192.c
index ab27cd66b866..add177eb17d2 100644
--- a/drivers/clk/mediatek/clk-mt8192.c
+++ b/drivers/clk/mediatek/clk-mt8192.c
@@ -1114,6 +1114,20 @@ static const struct mtk_gate top_clks[] = {
 	GATE_TOP(CLK_TOP_SSUSB_PHY_REF, "ssusb_phy_ref", "clk26m", 25),
 };
 
+static u16 infra_ao_rst_ofs[] = {
+	INFRA_RST0_SET_OFFSET,
+	INFRA_RST1_SET_OFFSET,
+	INFRA_RST2_SET_OFFSET,
+	INFRA_RST3_SET_OFFSET,
+	INFRA_RST4_SET_OFFSET,
+};
+
+static const struct mtk_clk_rst_desc clk_rst_desc = {
+	.version = MTK_RST_SET_CLR,
+	.rst_bank_ofs = infra_ao_rst_ofs,
+	.rst_bank_nr = ARRAY_SIZE(infra_ao_rst_ofs),
+};
+
 #define MT8192_PLL_FMAX		(3800UL * MHZ)
 #define MT8192_PLL_FMIN		(1500UL * MHZ)
 #define MT8192_INTEGER_BITS	8
@@ -1239,6 +1253,10 @@ static int clk_mt8192_infra_probe(struct platform_device *pdev)
 	if (r)
 		goto free_clk_data;
 
+	r = mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc);
+	if (r)
+		goto free_clk_data;
+
 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
 	if (r)
 		goto free_clk_data;
diff --git a/drivers/clk/mediatek/clk-mt8195-infra_ao.c b/drivers/clk/mediatek/clk-mt8195-infra_ao.c
index 8ebe3b9415c4..4b7f21a6b93c 100644
--- a/drivers/clk/mediatek/clk-mt8195-infra_ao.c
+++ b/drivers/clk/mediatek/clk-mt8195-infra_ao.c
@@ -182,9 +182,24 @@ static const struct mtk_gate infra_ao_clks[] = {
 	GATE_INFRA_AO4(CLK_INFRA_AO_PERI_UFS_MEM_SUB, "infra_ao_peri_ufs_mem_sub", "mem_466m", 31),
 };
 
+static u16 infra_ao_rst_ofs[] = {
+	INFRA_RST0_SET_OFFSET,
+	INFRA_RST1_SET_OFFSET,
+	INFRA_RST2_SET_OFFSET,
+	INFRA_RST3_SET_OFFSET,
+	INFRA_RST4_SET_OFFSET,
+};
+
+static struct mtk_clk_rst_desc infra_ao_rst_desc = {
+	.version = MTK_RST_SET_CLR,
+	.rst_bank_ofs = infra_ao_rst_ofs,
+	.rst_bank_nr = ARRAY_SIZE(infra_ao_rst_ofs),
+};
+
 static const struct mtk_clk_desc infra_ao_desc = {
 	.clks = infra_ao_clks,
 	.num_clks = ARRAY_SIZE(infra_ao_clks),
+	.rst_desc = &infra_ao_rst_desc,
 };
 
 static const struct of_device_id of_match_clk_mt8195_infra_ao[] = {
diff --git a/drivers/clk/mediatek/reset.h b/drivers/clk/mediatek/reset.h
index ac1ca902c200..4f14fe704763 100644
--- a/drivers/clk/mediatek/reset.h
+++ b/drivers/clk/mediatek/reset.h
@@ -11,6 +11,13 @@
 
 #define RST_NR_PER_BANK 32
 
+/* Infra global controller reset set register */
+#define INFRA_RST0_SET_OFFSET 0x120
+#define INFRA_RST1_SET_OFFSET 0x130
+#define INFRA_RST2_SET_OFFSET 0x140
+#define INFRA_RST3_SET_OFFSET 0x150
+#define INFRA_RST4_SET_OFFSET 0x730
+
 /**
  * enum mtk_reset_version - Version of MediaTek clock reset controller.
  * @MTK_RST_SIMPLE: Use the same registers for bit set and clear.
-- 
2.18.0