Thread (9 messages) 9 messages, 5 authors, 2024-01-24

Re: [PATCH v2 2/2] clk: mediatek: add infracfg reset controller for mt7988

From: Frank Wunderlich <hidden>
Date: 2024-01-08 13:46:53
Also in: linux-clk, linux-devicetree, linux-mediatek, lkml

Am 8. Januar 2024 11:12:26 MEZ schrieb AngeloGioacchino Del Regno [off-list ref]:
Il 05/01/24 17:20, Frank Wunderlich ha scritto:
quoted
From: Frank Wunderlich <redacted>

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

Signed-off-by: Frank Wunderlich <redacted>
---
  drivers/clk/mediatek/clk-mt7988-infracfg.c | 20 ++++++++++++++++++++
  1 file changed, 20 insertions(+)
diff --git a/drivers/clk/mediatek/clk-mt7988-infracfg.c b/drivers/clk/mediatek/clk-mt7988-infracfg.c
index 8011ef278bea..1660a45349ff 100644
--- a/drivers/clk/mediatek/clk-mt7988-infracfg.c
+++ b/drivers/clk/mediatek/clk-mt7988-infracfg.c
@@ -14,6 +14,9 @@
  #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	INFRA_RST_SET_OFFSET	0x80
    static DEFINE_SPINLOCK(mt7988_clk_lock);
  @@ -249,12 +252,29 @@ 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[] = {
+	INFRA_RST_SET_OFFSET,
+};
+
+static u16 infra_idx_map[] = {
+	[MT7988_INFRA_RST0_THERM_CTRL_SWRST] = 0 * RST_NR_PER_BANK + 9,
The MT7988A datasheet says that INFRA_RST0 bit 9 is CONN2EMI_M0_GALS_SLV_SWRST, so
this is wrong: THERM_CTRL_SWRST is in the RST1 register, bit 9.

Also, I'm sure that you really want to add the PCIe MAC reset bit as well, to be
used with the PCIe driver...

[MT7988_INFRA_RST0_PEXTP_MAC_SWRST] = 0 * RST_NR_PER_BANK + 6,
[MT7988_INFRA_RST1_THERM_CTRL_SWRST] = 1 * RST_NR_PER_BANK + 9,
Yes you are right...i have only rst1 as screenshot,need to get the full datasheet or can you tell me base address for rst0? Need to change value of INFRA_RST_SET_OFFSET then to rst0 and check RST_NR_PER_BANK to be correct.
Enjoy... :-)

Cheers,
Angelo

regards Frank

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