From: Weiyi Lu <weiyi.lu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
Rob Herring <robh@kernel.org>, Stephen Boyd <sboyd@kernel.org>,
Nicolas Boichat <drinkcat@chromium.org>
Cc: <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>, <linux-clk@vger.kernel.org>,
<srv_heupstream@mediatek.com>,
<Project_Global_Chrome_Upstream_Group@mediatek.com>,
Weiyi Lu <weiyi.lu@mediatek.com>
Subject: [PATCH v6 08/22] clk: mediatek: Add configurable enable control to mtk_pll_data
Date: Tue, 22 Dec 2020 21:09:33 +0800 [thread overview]
Message-ID: <1608642587-15634-9-git-send-email-weiyi.lu@mediatek.com> (raw)
In-Reply-To: <1608642587-15634-1-git-send-email-weiyi.lu@mediatek.com>
In all MediaTek PLL design, bit0 of CON0 register is always
the enable bit.
However, there's a special case of usbpll on MT8192.
The enable bit of usbpll is moved to bit2 of other register.
Add configurable en_reg and pll_en_bit for enable control or
default 0 where pll data are static variables.
Hence, CON0_BASE_EN could also be removed.
And there might have another special case on other chips,
the enable bit is still on CON0 register but not at bit0.
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
---
drivers/clk/mediatek/clk-mtk.h | 2 ++
drivers/clk/mediatek/clk-pll.c | 15 ++++++++++-----
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index c3d6756..c580663 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -233,6 +233,8 @@ struct mtk_pll_data {
uint32_t pcw_chg_reg;
const struct mtk_pll_div_table *div_table;
const char *parent_name;
+ uint32_t en_reg;
+ uint8_t pll_en_bit; /* Assume 0, indicates BIT(0) by default */
};
void mtk_clk_register_plls(struct device_node *node,
diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
index 11ed5d1..7fb001a 100644
--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c
@@ -44,6 +44,7 @@ struct mtk_clk_pll {
void __iomem *tuner_en_addr;
void __iomem *pcw_addr;
void __iomem *pcw_chg_addr;
+ void __iomem *en_addr;
const struct mtk_pll_data *data;
};
@@ -56,7 +57,7 @@ static int mtk_pll_is_prepared(struct clk_hw *hw)
{
struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
- return (readl(pll->base_addr + REG_CON0) & CON0_BASE_EN) != 0;
+ return (readl(pll->en_addr) & BIT(pll->data->pll_en_bit)) != 0;
}
static unsigned long __mtk_pll_recalc_rate(struct mtk_clk_pll *pll, u32 fin,
@@ -248,8 +249,8 @@ static int mtk_pll_prepare(struct clk_hw *hw)
writel(r, pll->pwr_addr);
udelay(1);
- r = readl(pll->base_addr + REG_CON0) | CON0_BASE_EN;
- writel(r, pll->base_addr + REG_CON0);
+ r = readl(pll->en_addr) | BIT(pll->data->pll_en_bit);
+ writel(r, pll->en_addr);
div_en_mask = pll->data->en_mask & ~CON0_BASE_EN;
if (div_en_mask) {
@@ -290,8 +291,8 @@ static void mtk_pll_unprepare(struct clk_hw *hw)
writel(r, pll->base_addr + REG_CON0);
}
- r = readl(pll->base_addr + REG_CON0) & ~CON0_BASE_EN;
- writel(r, pll->base_addr + REG_CON0);
+ r = readl(pll->en_addr) & ~BIT(pll->data->pll_en_bit);
+ writel(r, pll->en_addr);
r = readl(pll->pwr_addr) | CON0_ISO_EN;
writel(r, pll->pwr_addr);
@@ -333,6 +334,10 @@ static struct clk *mtk_clk_register_pll(const struct mtk_pll_data *data,
pll->tuner_addr = base + data->tuner_reg;
if (data->tuner_en_reg)
pll->tuner_en_addr = base + data->tuner_en_reg;
+ if (data->en_reg)
+ pll->en_addr = base + data->en_reg;
+ else
+ pll->en_addr = pll->base_addr + REG_CON0;
pll->hw.init = &init;
pll->data = data;
--
1.8.1.1.dirty
next prev parent reply other threads:[~2020-12-22 13:11 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-22 13:09 [PATCH v6 00/22] Mediatek MT8192 clock support Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 01/22] dt-bindings: ARM: Mediatek: Add new document bindings of imp i2c wrapper controller Weiyi Lu
2021-02-10 12:19 ` Matthias Brugger
2021-02-18 1:40 ` Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 02/22] dt-bindings: ARM: Mediatek: Add new document bindings of mdpsys controller Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 03/22] dt-bindings: ARM: Mediatek: Add new document bindings of msdc controller Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 04/22] dt-bindings: ARM: Mediatek: Add new document bindings of scp adsp controller Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 05/22] dt-bindings: ARM: Mediatek: Document bindings of MT8192 clock controllers Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 06/22] clk: mediatek: Add dt-bindings of MT8192 clocks Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 07/22] clk: mediatek: Fix asymmetrical PLL enable and disable control Weiyi Lu
2021-01-06 10:35 ` Ikjoon Jang
2020-12-22 13:09 ` Weiyi Lu [this message]
2021-01-06 10:37 ` [PATCH v6 08/22] clk: mediatek: Add configurable enable control to mtk_pll_data Ikjoon Jang
2020-12-22 13:09 ` [PATCH v6 09/22] clk: mediatek: Add mtk_clk_simple_probe() to simplify clock providers Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 10/22] clk: mediatek: Add MT8192 basic clocks support Weiyi Lu
2021-01-06 10:25 ` Ikjoon Jang
2021-01-06 10:42 ` Weiyi Lu
2021-01-06 10:52 ` Ikjoon Jang
2021-01-06 11:06 ` Weiyi Lu
2021-01-07 3:00 ` Ikjoon Jang
2021-02-10 12:46 ` Matthias Brugger
2021-02-18 1:59 ` Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 11/22] clk: mediatek: Add MT8192 audio clock support Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 12/22] clk: mediatek: Add MT8192 camsys " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 13/22] clk: mediatek: Add MT8192 imgsys " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 14/22] clk: mediatek: Add MT8192 imp i2c wrapper " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 15/22] clk: mediatek: Add MT8192 ipesys " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 16/22] clk: mediatek: Add MT8192 mdpsys " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 17/22] clk: mediatek: Add MT8192 mfgcfg " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 18/22] clk: mediatek: Add MT8192 mmsys " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 19/22] clk: mediatek: Add MT8192 msdc " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 20/22] clk: mediatek: Add MT8192 scp adsp " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 21/22] clk: mediatek: Add MT8192 vdecsys " Weiyi Lu
2020-12-22 13:09 ` [PATCH v6 22/22] clk: mediatek: Add MT8192 vencsys " Weiyi Lu
2021-01-13 7:18 ` [PATCH v6 00/22] Mediatek MT8192 " James Liao
2021-02-09 1:00 ` Stephen Boyd
2021-02-18 1:25 ` Weiyi Lu
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