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| Started by | Mans Rullgard <mans@mansr.com> |
|---|---|
| First post | 2015-11-09 00:20 +0100 |
| Last post | 2015-11-09 10:20 +0100 |
| Articles | 2 — 2 participants |
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[PATCH v2] ARM: debug: add support for Palmchip BK-310x UART Mans Rullgard <mans@mansr.com> - 2015-11-09 00:20 +0100
Re: [PATCH v2] ARM: debug: add support for Palmchip BK-310x UART Arnd Bergmann <arnd@arndb.de> - 2015-11-09 10:20 +0100
| From | Mans Rullgard <mans@mansr.com> |
|---|---|
| Date | 2015-11-09 00:20 +0100 |
| Subject | [PATCH v2] ARM: debug: add support for Palmchip BK-310x UART |
| Message-ID | <qsHpD-6IQ-13@gated-at.bofh.it> |
Some SoCs use a Palmchip BK-310x UART which is mostly 16550 compatible but with a different register layout. While this UART has previously only been supported in MIPS based chips (Alchemy, Ralink), the ARM based SMP87xx series from Sigma Designs also uses it. This patch allows the debug console to work with this type of UART. Signed-off-by: Mans Rullgard <mans@mansr.com> --- Changes: - moved #defines to a separate file --- arch/arm/Kconfig.debug | 9 +++++++++ arch/arm/include/debug/palmchip.S | 11 +++++++++++ 2 files changed, 20 insertions(+) create mode 100644 arch/arm/include/debug/palmchip.S diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 0cfd7f9..2864ed9 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -1314,6 +1314,7 @@ config DEBUG_SIRFSOC_UART config DEBUG_LL_INCLUDE string default "debug/sa1100.S" if DEBUG_SA1100 + default "debug/palmchip.S" if DEBUG_UART_8250_PALMCHIP default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250 default "debug/at91.S" if DEBUG_AT91_UART default "debug/asm9260.S" if DEBUG_ASM9260_UART @@ -1597,6 +1598,14 @@ config DEBUG_UART_8250_WORD DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2 || \ DEBUG_BRCMSTB_UART +config DEBUG_UART_8250_PALMCHIP + bool "8250 UART is Palmchip BK-310x" + depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 + help + Palmchip provides a UART implementation compatible with 16550 + except for having a different register layout. Say Y here if + the debug UART is of this type. + config DEBUG_UART_8250_FLOW_CONTROL bool "Enable flow control for 8250 UART" depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 diff --git a/arch/arm/include/debug/palmchip.S b/arch/arm/include/debug/palmchip.S new file mode 100644 index 0000000..6824b2d --- /dev/null +++ b/arch/arm/include/debug/palmchip.S @@ -0,0 +1,11 @@ +#include <linux/serial_reg.h> + +#undef UART_TX +#undef UART_LSR +#undef UART_MSR + +#define UART_TX 1 +#define UART_LSR 7 +#define UART_MSR 8 + +#include <debug/8250.S> -- 2.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Arnd Bergmann <arnd@arndb.de> |
|---|---|
| Date | 2015-11-09 10:20 +0100 |
| Message-ID | <qsQMi-4tx-3@gated-at.bofh.it> |
| In reply to | #1265246 |
On Sunday 08 November 2015 23:11:40 Mans Rullgard wrote: > Some SoCs use a Palmchip BK-310x UART which is mostly 16550 compatible > but with a different register layout. While this UART has previously > only been supported in MIPS based chips (Alchemy, Ralink), the ARM based > SMP87xx series from Sigma Designs also uses it. > > This patch allows the debug console to work with this type of UART. > > Signed-off-by: Mans Rullgard <mans@mansr.com> > Acked-by: Arnd Bergmann <arnd@arndb.de> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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