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Groups > linux.kernel > #1564019
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| From | Stephen Boyd <sboyd@codeaurora.org> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2 1/3] clk: bcm2835: Don't rate change PLLs on behalf of DSI PLL dividers. |
| Date | Sat, 21 Jan 2017 01:40:01 +0100 |
| Message-ID | <t1RSN-5Ms-5@gated-at.bofh.it> (permalink) |
| References | <t0IHU-3fQ-5@gated-at.bofh.it> |
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| X-Original-Cc | Florian Fainelli <f.fainelli@gmail.com>, Michael Turquette <mturquette@baylibre.com>, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stephen Warren <swarren@wwwdotorg.org>, Lee Jones <lee@kernel.org>, bcm-kernel-feedback-list@broadcom.com, linux-clk@vger.kernel.org |
| X-Original-Date | Fri, 20 Jan 2017 16:23:44 -0800 |
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| Xref | csiph.com linux.kernel:1564019 |
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On 01/18, Eric Anholt wrote: > Our core PLLs are intended to be configured once and left alone. With > the SET_RATE_PARENT, asking to set the PLLD_DSI1 clock rate would > change PLLD just to get closer to the requested DSI clock, thus > changing PLLD_PER, the UART and ethernet PHY clock rates downstream of > it, and breaking ethernet. > > We *do* want PLLH to change so that PLLH_AUX can be exactly the value > we want, though. Thus, we need to have a per-divider policy of > whether to pass rate changes up. > > Signed-off-by: Eric Anholt <eric@anholt.net> > --- Applied to clk-next -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
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[PATCH v2 1/3] clk: bcm2835: Don't rate change PLLs on behalf of DSI PLL dividers. Eric Anholt <eric@anholt.net> - 2017-01-17 21:40 +0100
[PATCH v2 3/3] clk: bcm2835: Add leaf clock measurement support, disabled by default Eric Anholt <eric@anholt.net> - 2017-01-17 21:40 +0100
Re: [PATCH v2 3/3] clk: bcm2835: Add leaf clock measurement support, disabled by default Stephen Boyd <sboyd@codeaurora.org> - 2017-01-21 01:40 +0100
[PATCH v2 2/3] clk: bcm2835: Register the DSI0/DSI1 pixel clocks. Eric Anholt <eric@anholt.net> - 2017-01-17 21:40 +0100
Re: [PATCH v2 2/3] clk: bcm2835: Register the DSI0/DSI1 pixel clocks. Stephen Boyd <sboyd@codeaurora.org> - 2017-01-21 01:40 +0100
Re: [PATCH v2 1/3] clk: bcm2835: Don't rate change PLLs on behalf of DSI PLL dividers. Stephen Boyd <sboyd@codeaurora.org> - 2017-01-21 01:40 +0100
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