i2c: add support for offset overflow in to address

Some devices (2 wire eeproms for example) use some bits from the chip
address to represent the high bits of the offset instead of or as well
as usi

i2c: add support for offset overflow in to address

Some devices (2 wire eeproms for example) use some bits from the chip
address to represent the high bits of the offset instead of or as well
as using multiple bytes for the offset, effectively stealing chip
addresses on the bus.

Add a chip offset mask that can be set for any i2c chip which gets
filled with the offset overflow during offset setup.

(cherry picked from commit 85968522b928e19a27aa79f0cb186c80b8b82e47)

Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Signed-off-by: Ian Ray <ian.ray@ge.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Tan Siewert <tan.siewert@hetzner.com>
Link: https://patch.msgid.link/20250117094434.16641-2-tan.siewert@hetzner.com
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

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i2c/aspeed: Only use new mode when driver is enabled

Don't attempt to switch to the AST2600 "new" register mode if the driver
is not compiled.

Signed-off-by: Joel Stanley <joel@jms.id.au>

ARM: dts: ast2600: Undo I2C hacks

The device tree matches Linux, and shouldn't be changed.

Signed-off-by: Joel Stanley <joel@jms.id.au>

i2c:ast2600: add ast2600 new register mode driver

Signed-off-by: ryan_chen <ryan_chen@aspeedtech.com>
Change-Id: I21ff67cd9677617e529dc88536255ec669f96f30

i2c: ast_i2c: Remove SCL direct drive mode

Merge this patch for i2c driver usage

SCL direct drive mode prevents communication with devices that
do clock stretching, so disable. The Linux driver doe

i2c: ast_i2c: Remove SCL direct drive mode

Merge this patch for i2c driver usage

SCL direct drive mode prevents communication with devices that
do clock stretching, so disable. The Linux driver doesn't use
this mode, and the engine can handle clock stretching.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/all/20220511205203.54982-1-eajames@linux.ibm.com/
Signed-off-by: Tommy Huang <tommy_huang@aspeedtech.com>
Change-Id: I4d493c3bb692595df68bc4d894e7e8ee2669323e

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add ast2600 i2c

update warning

update i2c ic name

enable i2c

first boot ast2600

i2c: i2c_cdns: Fix below warnings with checker tool

This patch fixes below warnings found with checker tool.
The variable len in i2c_msg struct is of unsigned type
and it is received as recv_count w

i2c: i2c_cdns: Fix below warnings with checker tool

This patch fixes below warnings found with checker tool.
The variable len in i2c_msg struct is of unsigned type
and it is received as recv_count which is unsigned type
but it is checked with < 0 which is always false, hence
removed it.
The local variable curr_recv_count is declared as signed
type and compared aginst unsigned recv_count which is
incorrect. This is fixed by declaring it as unsigned type.

drivers/i2c/i2c-cdns.c: In function ‘cdns_i2c_read_data’:
drivers/i2c/i2c-cdns.c:317:18: warning: comparison of
unsigned expression < 0 is always false [-Wtype-limits]
if ((recv_count < 0))
^
drivers/i2c/i2c-cdns.c:340:24: warning: comparison of
integer expressions of different signedness:
‘u32’ {aka ‘unsigned int’} and ‘int’ [-Wsign-compare]
updatetx = recv_count > curr_recv_count;
^
drivers/i2c/i2c-cdns.c:361:39: warning: comparison of
integer expressions of different signedness:
‘u32’ {aka ‘unsigned int’} and ‘int’ [-Wsign-compare]
while (readl(&regs->transfer_size) !=

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: rcar_i2c: Move FSDA check to rcar_i2c_recover

Cosmetic change. Any call to the recover function would need to do the
same check afterwards, so it's sensible to make it part of the function.

S

i2c: rcar_i2c: Move FSDA check to rcar_i2c_recover

Cosmetic change. Any call to the recover function would need to do the
same check afterwards, so it's sensible to make it part of the function.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>

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i2c: rcar_i2c: Set the slave address from rcar_i2c_xfer

It needs to be done for both reads and writes, so do it at rcar_i2c_xfer
to avoid duplication.

Signed-off-by: Ismael Luceno <ismael.luceno@si

i2c: rcar_i2c: Set the slave address from rcar_i2c_xfer

It needs to be done for both reads and writes, so do it at rcar_i2c_xfer
to avoid duplication.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: rcar_i2c: Don't mask errors with EREMOTEIO at rcar_i2c_xfer

Fix rcar_i2c_xfer return value, previously it was always returning
-EREMOTEIO when dealing with errors from calls to the read/write
f

i2c: rcar_i2c: Don't mask errors with EREMOTEIO at rcar_i2c_xfer

Fix rcar_i2c_xfer return value, previously it was always returning
-EREMOTEIO when dealing with errors from calls to the read/write
functions.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: rcar_i2c: Fix sending of slave addresses

Do the reset before clearing the MSR, otherwise it may result in a read
or write operation instead if the start condition is repeated.

Signed-off-by: I

i2c: rcar_i2c: Fix sending of slave addresses

Do the reset before clearing the MSR, otherwise it may result in a read
or write operation instead if the start condition is repeated.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: rcar_i2c: Add comments about registers & values

Document the meaning of macros related to registers and values to be
written to them.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.

i2c: rcar_i2c: Add comments about registers & values

Document the meaning of macros related to registers and values to be
written to them.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: rcar_i2c: Setup SCL/SDA delay at rcar_i2c_set_speed

Setting up the delay only needs to be done once; move it to
rcar_i2c_set_speed so it's done at initialization time.

Signed-off-by: Ismael Lu

i2c: rcar_i2c: Setup SCL/SDA delay at rcar_i2c_set_speed

Setting up the delay only needs to be done once; move it to
rcar_i2c_set_speed so it's done at initialization time.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: i2c_cdns: Add support for handling arbitration lost

This patch adds support for handling arbitration lost
in case of multi master mode. When an arbitration lost
is detected, it retries for 10 t

i2c: i2c_cdns: Add support for handling arbitration lost

This patch adds support for handling arbitration lost
in case of multi master mode. When an arbitration lost
is detected, it retries for 10 times before failing.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: i2c_cdns: Fix clearing of all interrupts

The arbitration lost interrupt was not getting cleared
while clearing interrupts. This patch fixes this by adding
arbitration lost interrupt as well dur

i2c: i2c_cdns: Fix clearing of all interrupts

The arbitration lost interrupt was not getting cleared
while clearing interrupts. This patch fixes this by adding
arbitration lost interrupt as well during clear. This patch
also removes hardcoded value and defined a macro for it.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: rcar_i2c: Add Gen3 SoC support

Add support for R-Car Gen3 SoCs into the driver, which encompases
the Gen3 SoC extra timing register handling and 64bit build fixes.

Signed-off-by: Marek Vasut <

i2c: rcar_i2c: Add Gen3 SoC support

Add support for R-Car Gen3 SoCs into the driver, which encompases
the Gen3 SoC extra timing register handling and 64bit build fixes.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: rcar_iic: Read ICSR only once

Read ICSR only once to avoid missing interrupts. This happens on R8A7791
Porter during reset, when reading the PMIC register 0x13, which may fail
sometimes because

i2c: rcar_iic: Read ICSR only once

Read ICSR only once to avoid missing interrupts. This happens on R8A7791
Porter during reset, when reading the PMIC register 0x13, which may fail
sometimes because of the missed DTE interrupt.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Reviewed-by: Heiko Schocher <hs@denx.de>

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Merge branch 'master' of git://git.denx.de/u-boot-tegra

Kconfig: tegra: Migrate SYS_I2C_TEGRA

Migrate SYS_I2C_TEGRA from headers to Kconfig

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Cc: Tom Warren <twarren@nvidia.com>
Cc: Stephen Warren <swar

Kconfig: tegra: Migrate SYS_I2C_TEGRA

Migrate SYS_I2C_TEGRA from headers to Kconfig

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Cc: Tom Warren <twarren@nvidia.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Peter.Chubb@data61.csiro.au
Cc: Lucas Stach <dev@lynxeye.de>
Cc: Stefan Agner <stefan.agner@toradex.com>
Cc: Alban Bedel <alban.bedel@avionic-design.de>
Cc: Allen Martin <amartin@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

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i2c: designware: Add error checking on init

At present this driver does not check whether it is able to actually
communicate with the I2C controller. It prints a timeout message but still
considers

i2c: designware: Add error checking on init

At present this driver does not check whether it is able to actually
communicate with the I2C controller. It prints a timeout message but still
considers the probe to be successful.

To fix this, add some checking that the init succeeds.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

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i2c: Remove ancient zynq_i2c driver

This driver is replaced by drivers/i2c/i2c-cdns.c DM based driver.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Heiko Schocher <hs@denx.de>