Thread (28 messages) 28 messages, 3 authors, 2021-02-11

Re: [PATCH v6 02/15] clk: tegra: Don't enable PLLE HW sequencer at init

From: Thierry Reding <hidden>
Date: 2021-01-19 23:35:51
Also in: linux-clk, linux-tegra, linux-usb, lkml

On Tue, Jan 19, 2021 at 04:55:33PM +0800, JC Kuo wrote:
PLLE hardware power sequencer references PEX/SATA UPHY PLL hardware
power sequencers' output to enable/disable PLLE. PLLE hardware power
sequencer has to be enabled only after PEX/SATA UPHY PLL's sequencers
are enabled.

Signed-off-by: JC Kuo <jckuo@nvidia.com>
Acked-by: Thierry Reding <redacted>
---
v6:
   no change
v5:
   no change
v4:
   no change 
v3:
   no change

 drivers/clk/tegra/clk-pll.c | 12 ------------
 1 file changed, 12 deletions(-)
Michael, Stephen,

here's patch 2 of the hardware sequencer series that would need an
Acked-by so that it can go through a different tree.

Thanks,
Thierry
quoted hunk ↗ jump to hunk
diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
index c5cc0a2dac6f..0193cebe8c5a 100644
--- a/drivers/clk/tegra/clk-pll.c
+++ b/drivers/clk/tegra/clk-pll.c
@@ -2515,18 +2515,6 @@ static int clk_plle_tegra210_enable(struct clk_hw *hw)
 	pll_writel(val, PLLE_SS_CTRL, pll);
 	udelay(1);
 
-	val = pll_readl_misc(pll);
-	val &= ~PLLE_MISC_IDDQ_SW_CTRL;
-	pll_writel_misc(val, pll);
-
-	val = pll_readl(pll->params->aux_reg, pll);
-	val |= (PLLE_AUX_USE_LOCKDET | PLLE_AUX_SS_SEQ_INCLUDE);
-	val &= ~(PLLE_AUX_ENABLE_SWCTL | PLLE_AUX_SS_SWCTL);
-	pll_writel(val, pll->params->aux_reg, pll);
-	udelay(1);
-	val |= PLLE_AUX_SEQ_ENABLE;
-	pll_writel(val, pll->params->aux_reg, pll);
-
 out:
 	if (pll->lock)
 		spin_unlock_irqrestore(pll->lock, flags);
-- 
2.25.1

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