AuxXxilium/linux_dsm_epyc7002
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cb527ede1b
linux_dsm_epyc7002/drivers/i2c/busses
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Richard woodruff cb527ede1b i2c-omap: Double clear of ARDY status in IRQ handler 
This errata occurs when the ARDY interrupt generation is enabled.
At the begining of every new transaction the ARDY interrupt is cleared.

On continuous i2c transactions where after clearing the ARDY bit from
I2C_STAT register (clearing the interrupt), the IRQ line is reasserted and the
I2C_STAT[ARDY] bit set again on 1. In fact, the ARDY status bit is not cleared
at the write access to I2C_STAT[ARDY] and only the IRQ line is deasserted and
then reasserted. This is not captured in the usual errata documents.

The workaround is to have a double clear of ARDY status in irq handler.

Signed-off-by: Richard woodruff <r-woodruff2@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-02-23 00:42:36 +00:00
..
i2c-acorn.c [ARM] acorn,ebsa110,footbridge,integrator,sa1100: Convert asm/io.h to linux/io.h 2009-03-25 10:21:35 +00:00
i2c-ali15x3.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-ali1535.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-ali1563.c i2c: Make PCI device ids constant 2010-03-02 12:23:37 +01:00
i2c-amd756-s4882.c i2c: Use snprintf to set adapter names 2009-01-07 14:29:18 +01:00
i2c-amd756.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-amd8111.c i2c-amd8111: Add proper error handling 2010-10-24 18:16:58 +02:00
i2c-at91.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-au1550.c i2c: Use resource_size macro 2009-06-16 22:42:16 +01:00
i2c-bfin-twi.c i2c-bfin-twi: move setup to the earlier subsys initcall 2011-01-12 22:23:08 +00:00
i2c-cpm.c of/i2c: Fix module load order issue caused by of_i2c.c 2010-09-30 14:14:23 +02:00
i2c-davinci.c i2c-davinci: Fix TX setup for more SoCs 2010-10-18 01:25:33 +01:00
i2c-designware.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
i2c-eg20t.c i2c-eg20t: add driver for Intel EG20T 2011-01-04 01:08:36 +00:00
i2c-elektor.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-gpio.c i2c-gpio: Move initialization code to subsys_initcall() 2010-05-21 18:40:58 +02:00
i2c-highlander.c i2c-highlander: remover superflous variable 2010-05-20 00:19:01 +01:00
i2c-hydra.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-i801.c i2c-i801: Include <linux/slab.h> 2011-01-10 22:11:22 +01:00
i2c-ibm_iic.c i2c: Remove unneeded inclusions of <linux/i2c-id.h> 2010-10-24 18:16:58 +02:00
i2c-ibm_iic.h i2c-ibm_iic: Whitespace cleanup 2008-01-27 18:14:45 +01:00
i2c-imx.c i2c-imx: do not allow interruptions when waiting for I2C to complete 2010-10-18 01:29:04 +01:00
i2c-intel-mid.c i2c_intel_mid: Fix slash in sysfs name 2010-12-14 18:46:01 -08:00
i2c-iop3xx.c i2c-iop3xx: add iomem annotation 2011-01-04 00:53:37 +00:00
i2c-iop3xx.h i2c-iop3xx: add iomem annotation 2011-01-04 00:53:37 +00:00
i2c-isch.c i2c: convert i2c-isch to platform_device 2010-03-07 22:17:36 +01:00
i2c-ixp2000.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
i2c-mpc.c of/i2c: Fix module load order issue caused by of_i2c.c 2010-09-30 14:14:23 +02:00
i2c-mv64xxx.c i2c-mv64xxx: send repeated START between messages in xfer 2011-01-04 01:19:43 +00:00
i2c-nforce2-s4985.c i2c: Fix oops on bus multiplexer driver loading 2008-08-10 22:56:15 +02:00
i2c-nforce2.c i2c-nforce2: Remove unnecessary cast of pci_get_drvdata 2011-01-10 22:11:22 +01:00
i2c-nomadik.c Merge branch 'for-linus/i2c-2638' of git://git.fluff.org/bjdooks/linux 2011-01-13 10:40:57 -08:00
i2c-nuc900.c i2c: Remove unneeded inclusions of <linux/i2c-id.h> 2010-10-24 18:16:58 +02:00
i2c-ocores.c i2c-ocores: add some device tree documentation 2011-01-04 01:04:29 +00:00
i2c-octeon.c i2c-octeon: Return -ETIMEDOUT in octeon_i2c_wait() on timeout 2010-09-27 23:21:16 +01:00
i2c-omap.c i2c-omap: Double clear of ARDY status in IRQ handler 2011-02-23 00:42:36 +00:00
i2c-parport-light.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-parport.c i2c-parport: Make template structure const 2010-05-21 18:40:57 +02:00
i2c-parport.h i2c-parport: Add SMBus alert support 2010-03-02 12:23:44 +01:00
i2c-pasemi.c i2c/i2c-pasemi.c: Fix unsigned return type 2010-10-13 16:19:04 +11:00
i2c-pca-isa.c i2c-pca: Fix waitforcompletion() return value 2010-09-30 14:14:22 +02:00
i2c-pca-platform.c i2c-pca-platform: Change device name of request_irq 2010-10-24 18:16:57 +02:00
i2c-piix4.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-pmcmsp.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-pnx.c i2c-pnx: Add stop conditions for end of transfer 2010-04-20 01:16:57 +01:00
i2c-powermac.c i2c-powermac: Be less verbose in the absence of real errors. 2010-03-13 20:56:52 +01:00
i2c-pxa.c i2c: Remove unneeded inclusions of <linux/i2c-id.h> 2010-10-24 18:16:58 +02:00
i2c-s3c2410.c Merge branch 'for-2637/i2c/samsung' into next-i2c 2010-10-28 10:07:14 +01:00
i2c-s6000.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-s6000.h i2c: xtensa s6000 i2c driver 2009-04-07 10:23:34 +01:00
i2c-scmi.c i2c-scmi: Provide module aliases for automatic loading 2010-03-24 14:38:39 +01:00
i2c-sh7760.c sh: i2c-sh7760: Replase from ctrl_* to __raw_* 2010-10-25 10:44:19 +09:00
i2c-sh_mobile.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-08-16 13:32:24 +09:00
i2c-sibyte.c i2c/mips: Fix error return codes from Sibyte i2c bus driver 2010-07-10 09:42:47 +02:00
i2c-simtec.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-sis96x.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-sis630.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-sis5595.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-stu300.c i2c-stu300: make sure adapter-name is terminated 2011-02-22 23:53:44 +00:00
i2c-stub.c i2c-stub: Expose the default functionality flags 2010-05-21 18:40:56 +02:00
i2c-taos-evm.c i2c-taos-evm: Switch echo off to improve performance 2009-09-18 22:45:43 +02:00
i2c-tiny-usb.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
i2c-versatile.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-via.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00
i2c-viapro.c i2c-viapro: Don't log nacks 2010-10-24 18:16:59 +02:00
i2c-xiic.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
Kconfig i2c-eg20t: add driver for Intel EG20T 2011-01-04 01:08:36 +00:00
Makefile i2c-eg20t: add driver for Intel EG20T 2011-01-04 01:08:36 +00:00
scx200_acb.c i2c: Convert SCx200 driver from using raw PCI to platform device 2011-01-14 12:38:15 +01:00
scx200_i2c.c i2c: Use <linux/io.h> instead of <asm/io.h> 2010-05-21 18:41:01 +02:00