From: "Théo Lebrun" <theo.lebrun@bootlin.com>
To: "Stephen Boyd" <sboyd@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Michael Turquette" <mturquette@baylibre.com>,
"Philipp Zabel" <p.zabel@pengutronix.de>,
"Rob Herring" <robh@kernel.org>
Cc: <linux-mips@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-clk@vger.kernel.org>,
<linux-gpio@vger.kernel.org>,
"Vladimir Kondratiev" <vladimir.kondratiev@mobileye.com>,
"Gregory CLEMENT" <gregory.clement@bootlin.com>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
"Tawfik Bayouk" <tawfik.bayouk@mobileye.com>
Subject: Re: [PATCH 04/11] clk: divider: Introduce CLK_DIVIDER_EVEN_INTEGERS flag
Date: Thu, 11 Apr 2024 12:14:09 +0200 [thread overview]
Message-ID: <D0H7PXOXYNXI.2QM4E0O02FK34@bootlin.com> (raw)
In-Reply-To: <4ce9f3cea1ecd3777cf3e291cc865210.sboyd@kernel.org>
Hello,
On Thu Apr 11, 2024 at 5:06 AM CEST, Stephen Boyd wrote:
> Quoting Théo Lebrun (2024-04-10 10:12:33)
> > index 4a537260f655..cb348e502e41 100644
> > --- a/include/linux/clk-provider.h
> > +++ b/include/linux/clk-provider.h
> > @@ -675,13 +675,15 @@ struct clk_div_table {
> > * CLK_DIVIDER_BIG_ENDIAN - By default little endian register accesses are used
> > * for the divider register. Setting this flag makes the register accesses
> > * big endian.
> > + * CLK_DIVIDER_EVEN_INTEGERS - clock divisor is 2, 4, 6, 8, 10, etc.
> > + * Formula is 2 * (value read from hardware + 1).
> > */
> > struct clk_divider {
> > struct clk_hw hw;
> > void __iomem *reg;
> > u8 shift;
> > u8 width;
> > - u8 flags;
> > + u16 flags;
>
> This can stay u8
It is unclear to me why it can stay u8? __clk_hw_register_divider() puts
clk_divider_flags into flags field of struct clk_divider.
BIT(8) overflows u8.
>
> > const struct clk_div_table *table;
> > spinlock_t *lock;
> > };
>
> We should add a kunit test.
Will look into how this works and try something for next revision. I
guess you are talking about adding clk_divider tests, not only tests
for this flag? I cannot find any existing kunit tests for clk_divider.
Thanks,
--
Théo Lebrun, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
next prev parent reply other threads:[~2024-04-11 10:14 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-10 17:12 [PATCH 00/11] Add Mobileye EyeQ system controller support (clk, reset, pinctrl) Théo Lebrun
2024-04-10 17:12 ` [PATCH 01/11] dt-bindings: soc: mobileye: add EyeQ5 OLB system controller Théo Lebrun
2024-04-10 18:52 ` Rob Herring
2024-04-11 9:19 ` Théo Lebrun
2024-04-11 3:29 ` Stephen Boyd
2024-04-10 17:12 ` [PATCH 02/11] dt-bindings: clock: mobileye,eyeq5-clk: add EyeQ6L and EyeQ6H Théo Lebrun
2024-04-11 6:14 ` Krzysztof Kozlowski
2024-04-11 13:49 ` Théo Lebrun
2024-04-11 15:02 ` Krzysztof Kozlowski
2024-04-10 17:12 ` [PATCH 03/11] dt-bindings: reset: mobileye,eyeq5-reset: " Théo Lebrun
2024-04-11 6:14 ` Krzysztof Kozlowski
2024-04-11 14:04 ` Théo Lebrun
2024-04-11 15:05 ` Krzysztof Kozlowski
2024-04-10 17:12 ` [PATCH 04/11] clk: divider: Introduce CLK_DIVIDER_EVEN_INTEGERS flag Théo Lebrun
2024-04-11 3:06 ` Stephen Boyd
2024-04-11 10:14 ` Théo Lebrun [this message]
2024-04-12 5:19 ` Stephen Boyd
2024-04-10 17:12 ` [PATCH 05/11] clk: eyeq: add driver Théo Lebrun
2024-04-11 3:22 ` Stephen Boyd
2024-04-11 10:46 ` Théo Lebrun
2024-04-12 5:46 ` Stephen Boyd
2024-04-17 10:18 ` Théo Lebrun
2024-04-10 17:12 ` [PATCH 06/11] reset: eyeq: add platform driver Théo Lebrun
2024-04-10 17:12 ` [PATCH 07/11] pinctrl: eyeq5: " Théo Lebrun
2024-04-10 17:12 ` [PATCH 08/11] MIPS: mobileye: eyeq5: add OLB syscon node Théo Lebrun
2024-04-11 6:15 ` Krzysztof Kozlowski
2024-04-11 14:34 ` Théo Lebrun
2024-04-11 15:07 ` Krzysztof Kozlowski
2024-04-17 7:53 ` Théo Lebrun
2024-04-10 17:12 ` [PATCH 09/11] MIPS: mobileye: eyeq5: use OLB clocks controller node Théo Lebrun
2024-04-10 17:12 ` [PATCH 10/11] MIPS: mobileye: eyeq5: add OLB reset " Théo Lebrun
2024-04-10 17:12 ` [PATCH 11/11] MIPS: mobileye: eyeq5: add pinctrl node & pinmux function nodes Théo Lebrun
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