On modern Qualcomm platforms including SDM845 a GENI SE QUP IP description is supposed to be found in board device tree nodes, the version of the IP is used by the GENI UART driver to properly set an oversampling divider value, which impacts UART baudrate.
The change touches dragonboard845c and starqltechn board device tree source files, a device tree node label to "debug" UART is renamed to 'uart9' according to the naming found in Linux.
Signed-off-by: Vladimir Zapolskiy vladimir.zapolskiy@linaro.org --- arch/arm/dts/dragonboard845c.dts | 2 +- arch/arm/dts/sdm845.dtsi | 25 +++++++++++++++---------- arch/arm/dts/starqltechn.dts | 2 +- 3 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/arch/arm/dts/dragonboard845c.dts b/arch/arm/dts/dragonboard845c.dts index 1722dce33ff2..b4f057ac6537 100644 --- a/arch/arm/dts/dragonboard845c.dts +++ b/arch/arm/dts/dragonboard845c.dts @@ -21,7 +21,7 @@ };
aliases { - serial0 = &debug_uart; + serial0 = &uart9; };
memory { diff --git a/arch/arm/dts/sdm845.dtsi b/arch/arm/dts/sdm845.dtsi index 92bdc82177d6..3b86b9328fc6 100644 --- a/arch/arm/dts/sdm845.dtsi +++ b/arch/arm/dts/sdm845.dtsi @@ -51,16 +51,21 @@ }; };
- debug_uart: serial@a84000 { - compatible = "qcom,geni-debug-uart"; - reg = <0xa84000 0x4000>; - reg-names = "se_phys"; - clock-names = "se"; - clocks = <&gcc GCC_QUPV3_WRAP1_S1_CLK>; - pinctrl-names = "default"; - pinctrl-0 = <&qup_uart9>; - qcom,wrapper-core = <0x8a>; - status = "disabled"; + qupv3_id_1: geniqup@ac0000 { + compatible = "qcom,geni-se-qup"; + reg = <0x00ac0000 0x6000>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + uart9: serial@a84000 { + compatible = "qcom,geni-debug-uart"; + reg = <0xa84000 0x4000>; + clock-names = "se"; + clocks = <&gcc GCC_QUPV3_WRAP1_S1_CLK>; + pinctrl-names = "default"; + pinctrl-0 = <&qup_uart9>; + }; };
spmi@c440000 { diff --git a/arch/arm/dts/starqltechn.dts b/arch/arm/dts/starqltechn.dts index 34a4f59cbd17..dcbc3b6d4966 100644 --- a/arch/arm/dts/starqltechn.dts +++ b/arch/arm/dts/starqltechn.dts @@ -21,7 +21,7 @@ };
aliases { - serial0 = &debug_uart; + serial0 = &uart9; };
memory {