[PATCH 30/30] clk: mediatek: mt8196: Add UFS and PEXTP0/1 reset controllers

Laura Nao
2025-06-23T12:30:28Z

From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Add definitions to register the reset controllers found in the
UFS and PEXTP clock controllers.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Laura Nao <laura.nao@collabora.com>
---
drivers/clk/mediatek/clk-mt8196-pextp.c | 36 ++++++++++++++++++++++++
drivers/clk/mediatek/clk-mt8196-ufs_ao.c | 25 ++++++++++++++++
2 files changed, 61 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mt8196-pextp.c b/drivers/clk/mediatek/clk-mt8196-pextp.c
index 938100e4836b..9a7623bf2b1c 100644
--- a/drivers/clk/mediatek/clk-mt8196-pextp.c
+++ b/drivers/clk/mediatek/clk-mt8196-pextp.c
@@ -6,6 +6,7 @@
* Laura Nao <laura.nao@collabora.com>
*/
#include <dt-bindings/clock/mediatek,mt8196-clock.h>
+#include <dt-bindings/reset/mediatek,mt8196-resets.h>
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/of_device.h>
@@ -13,6 +14,9 @@

#include "clk-gate.h"
#include "clk-mtk.h"
+#include "reset.h"
+
+#define MT8196_PEXTP_RST0_SET_OFFSET 0x8

static const struct mtk_gate_regs pext_cg_regs = {
.set_ofs = 0x18,
@@ -41,9 +45,25 @@ static const struct mtk_gate pext_clks[] = {
GATE_PEXT(CLK_PEXT_PEXTP_VLP_AO_P0_LP, "pext_pextp_vlp_ao_p0_lp", "clk26m", 19),
};

+static u16 pext_rst_ofs[] = { MT8196_PEXTP_RST0_SET_OFFSET };
+
+static u16 pext_rst_idx_map[] = {
+ [MT8196_PEXTP0_RST0_PCIE0_MAC] = 0,
+ [MT8196_PEXTP0_RST0_PCIE0_PHY] = 1,
+};
+
+static const struct mtk_clk_rst_desc pext_rst_desc = {
+ .version = MTK_RST_SET_CLR,
+ .rst_bank_ofs = pext_rst_ofs,
+ .rst_bank_nr = ARRAY_SIZE(pext_rst_ofs),
+ .rst_idx_map = pext_rst_idx_map,
+ .rst_idx_map_nr = ARRAY_SIZE(pext_rst_idx_map),
+};
+
static const struct mtk_clk_desc pext_mcd = {
.clks = pext_clks,
.num_clks = ARRAY_SIZE(pext_clks),
+ .rst_desc = &pext_rst_desc,
};

static const struct mtk_gate pext1_clks[] = {
@@ -69,9 +89,25 @@ static const struct mtk_gate pext1_clks[] = {
GATE_PEXT(CLK_PEXT1_PEXTP_VLP_AO_P2_LP, "pext1_pextp_vlp_ao_p2_lp", "clk26m", 27),
};

+static u16 pext1_rst_idx_map[] = {
+ [MT8196_PEXTP1_RST0_PCIE1_MAC] = 0,
+ [MT8196_PEXTP1_RST0_PCIE1_PHY] = 1,
+ [MT8196_PEXTP1_RST0_PCIE2_MAC] = 8,
+ [MT8196_PEXTP1_RST0_PCIE2_PHY] = 9,
+};
+
+static const struct mtk_clk_rst_desc pext1_rst_desc = {
+ .version = MTK_RST_SET_CLR,
+ .rst_bank_ofs = pext_rst_ofs,
+ .rst_bank_nr = ARRAY_SIZE(pext_rst_ofs),
+ .rst_idx_map = pext1_rst_idx_map,
+ .rst_idx_map_nr = ARRAY_SIZE(pext1_rst_idx_map),
+};
+
static const struct mtk_clk_desc pext1_mcd = {
.clks = pext1_clks,
.num_clks = ARRAY_SIZE(pext1_clks),
+ .rst_desc = &pext1_rst_desc,
};

static const struct of_device_id of_match_clk_mt8196_pextp[] = {
diff --git a/drivers/clk/mediatek/clk-mt8196-ufs_ao.c b/drivers/clk/mediatek/clk-mt8196-ufs_ao.c
index 49f4f4af7f41..858706b3ba6f 100644
--- a/drivers/clk/mediatek/clk-mt8196-ufs_ao.c
+++ b/drivers/clk/mediatek/clk-mt8196-ufs_ao.c
@@ -6,6 +6,7 @@
* Laura Nao <laura.nao@collabora.com>
*/
#include <dt-bindings/clock/mediatek,mt8196-clock.h>
+#include <dt-bindings/reset/mediatek,mt8196-resets.h>
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/of_device.h>
@@ -14,6 +15,9 @@
#include "clk-gate.h"
#include "clk-mtk.h"

+#define MT8196_UFSAO_RST0_SET_OFFSET 0x48
+#define MT8196_UFSAO_RST1_SET_OFFSET 0x148
+
static const struct mtk_gate_regs ufsao0_cg_regs = {
.set_ofs = 0x108,
.clr_ofs = 0x10c,
@@ -59,9 +63,30 @@ static const struct mtk_gate ufsao_clks[] = {
GATE_UFSAO1(CLK_UFSAO_PHY_SAP, "ufsao_phy_sap", "clk26m", 8),
};

+static u16 ufsao_rst_ofs[] = {
+ MT8196_UFSAO_RST0_SET_OFFSET,
+ MT8196_UFSAO_RST1_SET_OFFSET
+};
+
+static u16 ufsao_rst_idx_map[] = {
+ [MT8196_UFSAO_RST0_UFS_MPHY] = 8,
+ [MT8196_UFSAO_RST1_UFS_UNIPRO] = 1 * RST_NR_PER_BANK + 0,
+ [MT8196_UFSAO_RST1_UFS_CRYPTO] = 1 * RST_NR_PER_BANK + 1,
+ [MT8196_UFSAO_RST1_UFSHCI] = 1 * RST_NR_PER_BANK + 2,
+};
+
+static const struct mtk_clk_rst_desc ufsao_rst_desc = {
+ .version = MTK_RST_SET_CLR,
+ .rst_bank_ofs = ufsao_rst_ofs,
+ .rst_bank_nr = ARRAY_SIZE(ufsao_rst_ofs),
+ .rst_idx_map = ufsao_rst_idx_map,
+ .rst_idx_map_nr = ARRAY_SIZE(ufsao_rst_idx_map),
+};
+
static const struct mtk_clk_desc ufsao_mcd = {
.clks = ufsao_clks,
.num_clks = ARRAY_SIZE(ufsao_clks),
+ .rst_desc = &ufsao_rst_desc,
};

static const struct of_device_id of_match_clk_mt8196_ufs_ao[] = {
--
2.39.5