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From: Sekhar Nori <nsekhar@ti.com>
To: David Lechner <david@lechnology.com>, <linux-clk@vger.kernel.org>,
	<devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>
Cc: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Kevin Hilman <khilman@kernel.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	Adam Ford <aford173@gmail.com>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v9 02/27] clk: davinci: da850-pll: change PLL0 to CLK_OF_DECLARE
Date: Tue, 1 May 2018 19:16:10 +0530	[thread overview]
Message-ID: <fe791ecf-ebd0-4e9e-722e-bfa07acc4ea2@ti.com> (raw)
In-Reply-To: <20180427001745.4116-3-david@lechnology.com>

On Friday 27 April 2018 05:47 AM, David Lechner wrote:
> PLL0 on davinci/da850-type device needs to be registered early in boot
> because it is needed for clocksource/clockevent. Change the driver
> to use CLK_OF_DECLARE for this special case.
> 
> Signed-off-by: David Lechner <david@lechnology.com>
> ---
> 
> v9 changes:
> - new patch in v9
> 
> 
>  drivers/clk/davinci/pll-da850.c | 26 ++++++++++++++++++++++----
>  drivers/clk/davinci/pll.c       |  4 +++-
>  drivers/clk/davinci/pll.h       |  2 +-
>  3 files changed, 26 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/clk/davinci/pll-da850.c b/drivers/clk/davinci/pll-da850.c
> index 00a6ece7b524..743527de1da2 100644
> --- a/drivers/clk/davinci/pll-da850.c
> +++ b/drivers/clk/davinci/pll-da850.c
> @@ -12,6 +12,8 @@
>  #include <linux/init.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/da8xx-cfgchip.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/of_address.h>
>  #include <linux/of.h>
>  #include <linux/types.h>
>  
> @@ -135,11 +137,27 @@ static const struct davinci_pll_sysclk_info *da850_pll0_sysclk_info[] = {
>  	NULL
>  };
>  
> -int of_da850_pll0_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
> +void of_da850_pll0_init(struct device_node *node)
>  {
> -	return of_davinci_pll_init(dev, dev->of_node, &da850_pll0_info,
> -				   &da850_pll0_obsclk_info,
> -				   da850_pll0_sysclk_info, 7, base, cfgchip);
> +	void __iomem *base;
> +	struct regmap *cfgchip;
> +
> +	base = of_iomap(node, 0);
> +	if (!base) {
> +		pr_err("%s: ioremap failed\n", __func__);
> +		return;
> +	}
> +
> +	cfgchip = syscon_regmap_lookup_by_compatible("ti,da830-cfgchip");
> +	if (IS_ERR(cfgchip)) {
> +		pr_warn("%s: failed to get cfgchip (%ld)\n", __func__,
> +			PTR_ERR(cfgchip));
> +		cfgchip = NULL;
> +	}

Is this error handling for cfgchip needed here considering
davinci_pll_clk_register() already checks and warns.

Thanks,
Sekhar

  reply	other threads:[~2018-05-01 13:47 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-27  0:17 [PATCH v9 00/27] ARM: davinci: convert to common clock framework​ David Lechner
2018-04-27  0:17 ` [PATCH v9 01/27] clk: davinci: pll: allow dev == NULL David Lechner
2018-05-01 13:27   ` Sekhar Nori
2018-05-02  1:44     ` David Lechner
2018-04-27  0:17 ` [PATCH v9 02/27] clk: davinci: da850-pll: change PLL0 to CLK_OF_DECLARE David Lechner
2018-05-01 13:46   ` Sekhar Nori [this message]
2018-05-02  1:46     ` David Lechner
2018-04-27  0:17 ` [PATCH v9 03/27] clk: davinci: psc: allow for dev == NULL David Lechner
2018-05-01 14:02   ` Sekhar Nori
2018-05-02  1:49     ` David Lechner
2018-05-02 15:08       ` Sekhar Nori
2018-04-27  0:17 ` [PATCH v9 04/27] ARM: davinci: pass clock as parameter to davinci_timer_init() David Lechner
2018-05-01 14:09   ` Sekhar Nori
2018-04-27  0:17 ` [PATCH v9 05/27] ARM: davinci: da830: add new clock init using common clock framework David Lechner
2018-05-01 14:13   ` Sekhar Nori
2018-04-27  0:17 ` [PATCH v9 06/27] ARM: davinci: da850: " David Lechner
2018-05-01 14:17   ` Sekhar Nori
2018-04-27  0:17 ` [PATCH v9 07/27] ARM: davinci: dm355: " David Lechner
2018-05-03 15:34   ` Sekhar Nori
2018-05-03 15:44     ` David Lechner
2018-05-04 10:01       ` Sekhar Nori
2018-05-04 14:26         ` David Lechner
2018-04-27  0:17 ` [PATCH v9 08/27] ARM: davinci: dm365: " David Lechner
2018-04-27  0:17 ` [PATCH v9 09/27] ARM: davinci: dm644x: " David Lechner
2018-05-03 13:18   ` Sekhar Nori
2018-04-27  0:17 ` [PATCH v9 10/27] ARM: davinci: dm646x: " David Lechner
2018-04-27  0:17 ` [PATCH v9 11/27] ARM: davinci: da8xx: add new USB PHY " David Lechner
2018-04-27  0:17 ` [PATCH v9 12/27] ARM: davinci: da8xx: add new sata_refclk " David Lechner
2018-04-27  0:17 ` [PATCH v9 13/27] ARM: davinci: remove CONFIG_DAVINCI_RESET_CLOCKS David Lechner
2018-04-27  0:17 ` [PATCH v9 14/27] ARM: davinci_all_defconfig: " David Lechner
2018-04-27  0:17 ` [PATCH v9 15/27] ARM: davinci: switch to common clock framework David Lechner
2018-04-27  0:17 ` [PATCH v9 16/27] ARM: davinci: da830: Remove legacy clock init David Lechner
2018-04-27  0:17 ` [PATCH v9 17/27] ARM: davinci: da850: " David Lechner
2018-04-27  0:17 ` [PATCH v9 18/27] ARM: davinci: dm355: " David Lechner
2018-04-27  0:17 ` [PATCH v9 19/27] ARM: davinci: dm365: " David Lechner
2018-04-27  0:17 ` [PATCH v9 20/27] ARM: davinci: dm644x: " David Lechner
2018-04-27  0:17 ` [PATCH v9 21/27] ARM: davinci: dm646x: " David Lechner
2018-04-27  0:17 ` [PATCH v9 22/27] ARM: davinci: da8xx: Remove legacy USB and SATA " David Lechner
2018-04-27  0:17 ` [PATCH v9 23/27] ARM: davinci: remove legacy clocks David Lechner
2018-04-27  0:17 ` [PATCH v9 24/27] dt-bindings: timer: new bindings for TI DaVinci timer David Lechner
2018-04-27 14:05   ` Rob Herring
2018-05-02  1:52     ` David Lechner
2018-05-02  5:03       ` Sekhar Nori
2018-04-27  0:17 ` [PATCH v9 25/27] ARM: davinci: add device tree support to timer David Lechner
2018-04-27  0:17 ` [PATCH v9 26/27] ARM: davinci: da8xx-dt: switch to device tree clocks David Lechner
2018-04-27  9:53   ` Bartosz Golaszewski
2018-04-27  0:17 ` [PATCH v9 27/27] ARM: dts: da850: Add clocks David Lechner
2018-04-27 12:04 ` [PATCH v9 00/27] ARM: davinci: convert to common clock framework​ Bartosz Golaszewski
2018-04-30 20:35 ` Bartosz Golaszewski
2018-05-01 14:45 ` Sekhar Nori

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