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Commit 40e1598f authored by Mitul Golani's avatar Mitul Golani Committed by Gerrit - the friendly Code Review server
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serial: msm_geni_serial: Decide UART sampling rate based on config 



Clock divider needs to get doubled for QUP HW version greater
than 2.5.0 as sampling rate is half. As earlycon can't have HW
version awareness, decision is taken based on the configuration.

Change-Id: I639b8b5bff1d3b897d6d202501708a195e0dac31
Signed-off-by: default avatarMitul Golani <mgolani@codeaurora.org>
parent 99a8045e

arch/arm64/configs/vendor/kona-perf_defconfig

+1 −0
Original line number Diff line number Diff line
@@ -343,6 +343,7 @@ CONFIG_INPUT_UINPUT=y 
# CONFIG_LEGACY_PTYS is not set

# CONFIG_DEVMEM is not set

CONFIG_SERIAL_MSM_GENI=y

CONFIG_SERIAL_MSM_GENI_HALF_SAMPLING=y

CONFIG_HW_RANDOM=y

CONFIG_HW_RANDOM_MSM_LEGACY=y

# CONFIG_DEVPORT is not set

arch/arm64/configs/vendor/kona_defconfig

+1 −0
Original line number Diff line number Diff line
@@ -352,6 +352,7 @@ CONFIG_INPUT_UINPUT=y 
# CONFIG_DEVMEM is not set

CONFIG_SERIAL_MSM_GENI=y

CONFIG_SERIAL_MSM_GENI_CONSOLE=y

CONFIG_SERIAL_MSM_GENI_HALF_SAMPLING=y

CONFIG_SERIAL_DEV_BUS=y

CONFIG_TTY_PRINTK=y

CONFIG_HW_RANDOM=y

arch/arm64/configs/vendor/lito-perf_defconfig

+1 −0
Original line number Diff line number Diff line
@@ -331,6 +331,7 @@ CONFIG_INPUT_UINPUT=y 
# CONFIG_LEGACY_PTYS is not set

# CONFIG_DEVMEM is not set

CONFIG_SERIAL_MSM_GENI=y

CONFIG_SERIAL_MSM_GENI_HALF_SAMPLING=y

CONFIG_TTY_PRINTK=y

CONFIG_HW_RANDOM=y

CONFIG_HW_RANDOM_MSM_LEGACY=y

arch/arm64/configs/vendor/lito_defconfig

+1 −0
Original line number Diff line number Diff line
@@ -338,6 +338,7 @@ CONFIG_INPUT_UINPUT=y 
# CONFIG_DEVMEM is not set

CONFIG_SERIAL_MSM_GENI=y

CONFIG_SERIAL_MSM_GENI_CONSOLE=y

CONFIG_SERIAL_MSM_GENI_HALF_SAMPLING=y

CONFIG_SERIAL_DEV_BUS=y

CONFIG_TTY_PRINTK=y

CONFIG_HW_RANDOM=y

drivers/tty/serial/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -1004,6 +1004,15 @@ config SERIAL_MSM_GENI_CONSOLE 
	select SERIAL_CORE_CONSOLE

	select SERIAL_EARLYCON



config SERIAL_MSM_GENI_HALF_SAMPLING

	bool "Changes clock divider which impacts sampling rate for QUP HW ver greater than 2.5.0"

	depends on SERIAL_MSM_GENI

	help

	  Clock divider value should be doubled for QUP hardware version

	  greater than 2.5.0.

	  As earlycon can't have HW version awareness, decision is taken

	  based on the configuration.



config SERIAL_VT8500

	bool "VIA VT8500 on-chip serial port support"

	depends on ARCH_VT8500