diff options
| author | Stephan Gerhold <stephan@gerhold.net> | 2019-11-25 18:04:25 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-12-09 14:45:01 +0100 |
| commit | fae284f1bc773c9297d337b94cf0aca3593d9842 (patch) | |
| tree | 4a67f2046a5408041c6579f1b5c5c0f79232b9f8 /arch/arm/boot/dts/ste-dbx5x0.dtsi | |
| parent | 96b619e3c1dfd7464652265d17ee8c07ef5cca92 (diff) | |
ARM: dts: ux500: Disable I2C/SPI buses by default
At the moment, all 5 I2C and 6 SPI buses are probed and exposed
to user-space by default - even if they are not muxed to any pins
on the board. This means that user-space sees an I2C/SPI bus that
cannot be actually used properly.
In some cases this was used to put the corresponding pins into
a low power sleep mode - but even then the pins first need to be
configured by the board-specific device tree part.
Avoid exposing unconfigured devices to user-space by disabling
the I2C/SPI buses by default. Enable them in the board device trees
when needed.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20191125170428.76069-1-stephan@gerhold.net
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts/ste-dbx5x0.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/ste-dbx5x0.dtsi | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/ste-dbx5x0.dtsi b/arch/arm/boot/dts/ste-dbx5x0.dtsi index bda454d12150..d0770c05c457 100644 --- a/arch/arm/boot/dts/ste-dbx5x0.dtsi +++ b/arch/arm/boot/dts/ste-dbx5x0.dtsi @@ -651,6 +651,8 @@ clocks = <&prcc_kclk 3 3>, <&prcc_pclk 3 3>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; i2c@80122000 { @@ -667,6 +669,8 @@ clocks = <&prcc_kclk 1 2>, <&prcc_pclk 1 2>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; i2c@80128000 { @@ -683,6 +687,8 @@ clocks = <&prcc_kclk 1 6>, <&prcc_pclk 1 6>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; i2c@80110000 { @@ -699,6 +705,8 @@ clocks = <&prcc_kclk 2 0>, <&prcc_pclk 2 0>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; i2c@8012a000 { @@ -715,6 +723,8 @@ clocks = <&prcc_kclk 1 9>, <&prcc_pclk 1 10>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80002000 { @@ -729,6 +739,8 @@ <&dma 8 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80003000 { @@ -743,6 +755,8 @@ <&dma 9 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@8011a000 { @@ -758,6 +772,8 @@ <&dma 0 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80112000 { @@ -773,6 +789,8 @@ <&dma 35 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80111000 { @@ -788,6 +806,8 @@ <&dma 33 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80129000 { @@ -803,6 +823,8 @@ <&dma 40 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; ux500_serial0: uart@80120000 { |