Re: [PATCH V4 07/15] clk: mediatek: reset: Support nonsequence base offsets of reset registers
From: AngeloGioacchino Del Regno
Date: Wed Apr 27 2022 - 09:39:03 EST
Il 27/04/22 05:09, Rex-BC Chen ha scritto:
The bank offsets are not serial for all reset registers.
For example, there are five infra reset banks for MT8192: 0x120, 0x130,
0x140, 0x150 and 0x730.
To support this,
- Change reg_ofs to rst_bank_ofs which is a pointer to base offsets of
the reset register.
- Add a new define RST_NR_PER_BANK to define reset number for each
reset bank.
Signed-off-by: Rex-BC Chen <rex-bc.chen@xxxxxxxxxxxx>
---
drivers/clk/mediatek/clk-mt2701-eth.c | 6 ++++--
drivers/clk/mediatek/clk-mt2701-g3d.c | 6 ++++--
drivers/clk/mediatek/clk-mt2701-hif.c | 6 ++++--
drivers/clk/mediatek/clk-mt2701.c | 11 +++++++----
drivers/clk/mediatek/clk-mt2712.c | 15 +++++++++------
drivers/clk/mediatek/clk-mt7622-eth.c | 6 ++++--
drivers/clk/mediatek/clk-mt7622-hif.c | 6 ++++--
drivers/clk/mediatek/clk-mt7622.c | 11 +++++++----
drivers/clk/mediatek/clk-mt7629-eth.c | 6 ++++--
drivers/clk/mediatek/clk-mt7629-hif.c | 6 ++++--
drivers/clk/mediatek/clk-mt8135.c | 11 +++++++----
drivers/clk/mediatek/clk-mt8173.c | 11 +++++++----
drivers/clk/mediatek/clk-mt8183.c | 14 ++++++++++++--
drivers/clk/mediatek/reset.c | 11 ++++++-----
drivers/clk/mediatek/reset.h | 6 ++++--
15 files changed, 87 insertions(+), 45 deletions(-)
..snip..
diff --git a/drivers/clk/mediatek/clk-mt2701.c b/drivers/clk/mediatek/clk-mt2701.c
index 70a934faa529..ebb1b9975ab0 100644
--- a/drivers/clk/mediatek/clk-mt2701.c
+++ b/drivers/clk/mediatek/clk-mt2701.c
@@ -735,18 +735,21 @@ static const struct mtk_fixed_factor infra_fixed_divs[] = {
FACTOR(CLK_INFRA_CLK_13M, "clk13m", "clk26m", 1, 2),
};
+static u16 infrasys_rst_ofs[] = { 0x30, 0x34, };
+static u16 perfcfg_rst_ofs[] = { 0x0, 0x4, };
Typo: perfcfg -> pericfg ... here and in some more files :))
+
static const struct mtk_clk_rst_desc clk_rst_desc[] = {
/* infrasys */
{
.version = MTK_RST_SIMPLE,
- .rst_bank_nr = 2,
- .reg_ofs = 0x30,
+ .rst_bank_ofs = infrasys_rst_ofs,
+ .rst_bank_nr = ARRAY_SIZE(infrasys_rst_ofs),
},
/* pericfg */
{
.version = MTK_RST_SIMPLE,
- .rst_bank_nr = 2,
- .reg_ofs = 0x0,
+ .rst_bank_ofs = perfcfg_rst_ofs,
+ .rst_bank_nr = ARRAY_SIZE(perfcfg_rst_ofs),
},
};
diff --git a/drivers/clk/mediatek/clk-mt2712.c b/drivers/clk/mediatek/clk-mt2712.c
index cef7c79788ec..2a9d70dd97d6 100644
--- a/drivers/clk/mediatek/clk-mt2712.c
+++ b/drivers/clk/mediatek/clk-mt2712.c
@@ -1258,18 +1258,21 @@ static const struct mtk_pll_data plls[] = {
0, 31, 0x0300, 4, 0, 0, 0, 0x0304, 0),
};
+static u16 infrasys_rst_ofs[] = { 0x30, 0x34, };
+static u16 perfcfg_rst_ofs[] = { 0x0, 0x4, };
+
static const struct mtk_clk_rst_desc clk_rst_desc[] = {
- /* infra */
+ /* infrasys */
Instead of renaming these here, if you really want this renamed, can you please
do that in patch [06/15]?
{
.version = MTK_RST_SIMPLE,
- .rst_bank_nr = 2,
- .reg_ofs = 0x30,
+ .rst_bank_ofs = infrasys_rst_ofs,
+ .rst_bank_nr = ARRAY_SIZE(infrasys_rst_ofs),
},
..snip..
diff --git a/drivers/clk/mediatek/reset.h b/drivers/clk/mediatek/reset.h
index 91358e8cb851..83840ecf8b27 100644
--- a/drivers/clk/mediatek/reset.h
+++ b/drivers/clk/mediatek/reset.h
@@ -9,6 +9,8 @@
#include <linux/reset-controller.h>
#include <linux/types.h>
+#define RST_NR_PER_BANK 32
+
/**
* enum mtk_reset_version - Version of MediaTek clock reset controller.
* @MTK_RST_SIMPLE: Use the same registers for bit set and clear.
@@ -24,12 +26,12 @@ enum mtk_reset_version {
/**
* struct mtk_clk_rst_desc - Description of MediaTek clock reset.
* @version: Reset version which is defined in enum mtk_reset_version.
- * @reg_ofs: Base offset of the reset register.
+ * @rst_bank_ofs: Pointer to base offsets of the reset register.
Instead of generically saying that this is a pointer, it would be more
appropriate to say that this is a pointer to an array containing base
offsets (etc).
Thanks,
Angelo
* @rst_bank_nr: Quantity of reset bank.
*/
struct mtk_clk_rst_desc {
u8 version;
- u16 reg_ofs;
+ u16 *rst_bank_ofs;
u32 rst_bank_nr;
};