From: Wolfram Sang <wsa@the-dreams.de>
To: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Cc: linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH-RESEND 0/3] i2c: core/pxa: Add support for hardware lock
Date: Sun, 25 Oct 2015 10:52:00 +0100 [thread overview]
Message-ID: <20151025095200.GE2159@katana> (raw)
In-Reply-To: <1433270731-23790-1-git-send-email-vaibhav.hiremath@linaro.org>
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On Wed, Jun 03, 2015 at 12:15:28AM +0530, Vaibhav Hiremath wrote:
> To justify the need for hardware lock, lets take a real usecase scenario -
>
> In case of Marvell SoC, PXA910 silicon, both AP and CP are present and
> these two ARM cores are sharing one pair of I2C pins.
>
> In order to keep I2C transaction operated with atomic, hardware lock
> (RIPC) is required.
>
> This patch extends support for atomic operation by adding hardware lock support
> to the i2c-core.
>
> PATCH[1/3] : Core changes for hardware lock
> PATCH[2/3 & 3/3] : hardware lock support to i2c-pxa bus driver.
Why don't you use the hwspinlock subsystem?
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next prev parent reply other threads:[~2015-10-25 9:52 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <vaibhav.hiremath@linaro.org>
2015-06-02 18:45 ` [PATCH-RESEND 0/3] i2c: core/pxa: Add support for hardware lock Vaibhav Hiremath
[not found] ` <1433270731-23790-1-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-02 18:45 ` [PATCH-RESEND 1/3] i2c: core: append hardware lock with bus lock Vaibhav Hiremath
2015-06-02 18:45 ` [PATCH-RESEND 2/3] i2c: pxa: Add support for hardware lock Vaibhav Hiremath
2015-06-02 18:45 ` [PATCH-RESEND 3/3] i2c: pxa: Add pin ctrl support for CP core access Vaibhav Hiremath
2015-06-16 8:28 ` [PATCH-RESEND 0/3] i2c: core/pxa: Add support for hardware lock Vaibhav Hiremath
[not found] ` <557FDE4B.3060304-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-07 6:43 ` Vaibhav Hiremath
2015-10-25 9:52 ` Wolfram Sang [this message]
2015-06-15 15:49 ` [PATCH-V2 00/12] i2c: pxa: Fixes, cleanup and support for pxa910 family Vaibhav Hiremath
[not found] ` <1434383399-2370-1-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-15 15:49 ` [PATCH-V2 01/12] i2c: pxa: keep i2c irq ON in suspend Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 02/12] i2c: pxa: No need to set slave addr for i2c master mode reset Vaibhav Hiremath
[not found] ` <1434383399-2370-3-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-03 20:58 ` Robert Jarzmik
2015-06-15 15:49 ` [PATCH-V2 03/12] i2c: pxa: Return I2C_RETRY when timeout in pio mode Vaibhav Hiremath
[not found] ` <1434383399-2370-4-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-16 5:31 ` Shubhrajyoti Datta
[not found] ` <CAM=Q2ct_PPkWkP4x3-YG4akYDw9Wi+HMK=5dJWEL4R8WO28JZQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-06-16 7:41 ` Vaibhav Hiremath
2015-07-03 21:07 ` Robert Jarzmik
2015-06-15 15:49 ` [PATCH-V2 04/12] i2c: pxa: Reset i2c controller on timeout in interrupt and " Vaibhav Hiremath
2015-07-03 15:27 ` Robert Jarzmik
[not found] ` <87fv55clcy.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-07-03 18:13 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 05/12] i2c: pxa: Remove compile warnning in 64bit mode Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 06/12] i2c: pxa: Update debug function to dump more info on error Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 07/12] i2c:pxa: Use devm_ variants in probe function Vaibhav Hiremath
2015-07-03 15:28 ` Robert Jarzmik
[not found] ` <873815clbx.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-07-03 18:14 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 08/12] i2c: pxa: enable/disable i2c module across msg xfer Vaibhav Hiremath
2015-07-03 15:28 ` Robert Jarzmik
[not found] ` <87oajtb6r0.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-07-03 18:23 ` Vaibhav Hiremath
[not found] ` <5596D33C.6010100-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-03 18:48 ` Vaibhav Hiremath
[not found] ` <5596D8EA.1090809-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-03 19:44 ` Robert Jarzmik
2015-06-15 15:49 ` [PATCH-V2 09/12] Documentation: binding: add new property 'disable_after_xfer' to i2c-pxa Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 10/12] i2c: pxa: Add support for pxa910/988 & new configuration features Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 11/12] i2c: pxa: Add ILCR (tLow & tHigh) configuration support Vaibhav Hiremath
2015-07-03 15:28 ` Robert Jarzmik
[not found] ` <87vbe1b6ra.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-07-03 18:17 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 12/12] Documentation: binding: add sclk adjustment properties to i2c-pxa Vaibhav Hiremath
[not found] ` <1434383399-2370-13-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-16 13:22 ` Rob Herring
[not found] ` <CAL_JsqKu0BFLU8JdxDwrkn2SZTQPX6GYu2AFOYP49zknfu28Tw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-06-16 14:25 ` Vaibhav Hiremath
2015-06-29 8:52 ` [PATCH-V2 00/12] i2c: pxa: Fixes, cleanup and support for pxa910 family Vaibhav Hiremath
[not found] ` <55910741.9020106-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-02 16:54 ` Vaibhav Hiremath
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