[PATCH v3 2/2] clk: mediatek: add infracfg reset controller for mt7988

From: Frank Wunderlich
Date: Wed Jan 17 2024 - 13:47:44 EST


From: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>

Infracfg can also operate as reset controller, add support for it.

Signed-off-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>
---
v3:
- start with RST0 (LVTS is in RST1)
- rename reset offset to contain SOC to not collide with constants
defined in reset.h
---
drivers/clk/mediatek/clk-mt7988-infracfg.c | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mt7988-infracfg.c b/drivers/clk/mediatek/clk-mt7988-infracfg.c
index 8011ef278bea..449041f8abbc 100644
--- a/drivers/clk/mediatek/clk-mt7988-infracfg.c
+++ b/drivers/clk/mediatek/clk-mt7988-infracfg.c
@@ -14,6 +14,10 @@
#include "clk-gate.h"
#include "clk-mux.h"
#include <dt-bindings/clock/mediatek,mt7988-clk.h>
+#include <dt-bindings/reset/mediatek,mt7988-resets.h>
+
+#define MT7988_INFRA_RST0_SET_OFFSET 0x70
+#define MT7988_INFRA_RST1_SET_OFFSET 0x80

static DEFINE_SPINLOCK(mt7988_clk_lock);

@@ -249,12 +253,31 @@ static const struct mtk_gate infra_clks[] = {
GATE_INFRA3(CLK_INFRA_133M_PCIE_CK_P3, "infra_133m_pcie_ck_p3", "sysaxi_sel", 31),
};

+static u16 infra_rst_ofs[] = {
+ MT7988_INFRA_RST0_SET_OFFSET,
+ MT7988_INFRA_RST1_SET_OFFSET,
+};
+
+static u16 infra_idx_map[] = {
+ [MT7988_INFRA_RST0_PEXTP_MAC_SWRST] = 0 * RST_NR_PER_BANK + 6,
+ [MT7988_INFRA_RST1_THERM_CTRL_SWRST] = 1 * RST_NR_PER_BANK + 9,
+};
+
+static struct mtk_clk_rst_desc infra_rst_desc = {
+ .version = MTK_RST_SET_CLR,
+ .rst_bank_ofs = infra_rst_ofs,
+ .rst_bank_nr = ARRAY_SIZE(infra_rst_ofs),
+ .rst_idx_map = infra_idx_map,
+ .rst_idx_map_nr = ARRAY_SIZE(infra_idx_map),
+};
+
static const struct mtk_clk_desc infra_desc = {
.clks = infra_clks,
.num_clks = ARRAY_SIZE(infra_clks),
.mux_clks = infra_muxes,
.num_mux_clks = ARRAY_SIZE(infra_muxes),
.clk_lock = &mt7988_clk_lock,
+ .rst_desc = &infra_rst_desc,
};

static const struct of_device_id of_match_clk_mt7988_infracfg[] = {
--
2.34.1