From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrzej Hajda Subject: [PATCH 0/3] i2c: exynos5: bus recovery implementation Date: Thu, 30 Nov 2017 15:30:04 +0100 Message-ID: <20171130143007.30258-1-a.hajda@samsung.com> References: Return-path: Sender: linux-samsung-soc-owner@vger.kernel.org To: Wolfram Sang , Andi Shyti Cc: Andrzej Hajda , Bartlomiej Zolnierkiewicz , Marek Szyprowski , "open list:I2C SUBSYSTEM" , "moderated list:ARM/SAMSUNG EXYNOS ARM ARCHITECTURES" List-Id: linux-i2c@vger.kernel.org Hi, This patchset adds bus recovery functionality to Exynos HSI2C, it is used in case of transmission timeouts. Internal tests shows that it significantly improves I2C transmissions. Andi, could you take a look at it/test, feedback welcome. Later, I will post also patches to MHL chip which uses this functionality. MHL chip has known bug of being in incorrect state after hard reset, I2C bus recovery cures it. Regards Andrzej Andrzej Hajda (3): i2c: exynos5: change internal transmission timeout to 100ms i2c: exynos5: implement bus recovery functionality i2c: exynos5: do not check TRANS_STATUS in case of Exynos7 variant drivers/i2c/busses/i2c-exynos5.c | 52 +++++++++++++++++++++++++++++++++------- 1 file changed, 44 insertions(+), 8 deletions(-) -- 2.15.0