BMC/Intel-BMC/linux.git/arch/mips/ath79, branch dev-4.6

MIPS: ath79: make bootconsole wait for both THRE and TEMT

2016-06-08T01:23:33+00:00

commit f5b556c94c8490d42fea79d7b4ae0ecbc291e69d upstream. This makes the ath79 bootconsole behave the same way as the generic 8250 bootconsole. Also waiting for TEMT (transmit buffer is empty) instead of just THRE (transmit buffer is not full) ensures that all characters have been transmitted before the real serial driver starts reconfiguring the serial controller (which would sometimes result in garbage being transmitted.) This change does not cause a visible performance loss. In addition, this seems to fix a hang observed in certain configurations on many AR7xxx/AR9xxx SoCs during autoconfig of the real serial driver. A more complete follow-up patch will disable 8250 autoconfig for ath79 altogether (the serial controller is detected as a 16550A, which is not fully compatible with the ath79 serial, and the autoconfig may lead to undefined behavior on ath79.) Signed-off-by: Matthias Schiffer Signed-off-by: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman

MIPS: ath79: Fix the ar913x reference clock rate

2016-04-03T10:32:10+00:00

The reference clock on ar913x is at 40MHz and not 5MHz. The current implementation use the wrong reference rate because it doesn't take the PLL divider in account. But if we fix the code to use the divider it becomes identical with the implementation for ar724x, so just drop the broken ar913x implementation. Signed-off-by: Alban Bedel Tested-by: Antony Pavlov Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12871/ Signed-off-by: Ralf Baechle

MIPS: ath79: Fix the ar724x clock calculation

2016-04-03T10:32:09+00:00

According to the AR7242 datasheet section 2.8, AR724X CPUs use a 40MHz input clock as the REF_CLK instead of 5MHz. The correct CPU PLL calculation procedure is as follows: CPU_PLL = (FB * REF_CLK) / REF_DIV / 2. This patch is compatible with the current calculation procedure with default FB and REF_DIV values. Tested on AR7240, AR7241 and AR7242. Signed-off-by: Weijie Gao Signed-off-by: Alban Bedel (Fixed the commit log message) Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12870/ Signed-off-by: Ralf Baechle

irqchip/ath79-cpu: Move the CPU IRQ driver from arch/mips/ath79/

2016-02-17T13:47:19+00:00

Signed-off-by: Alban Bedel Acked-by: Marc Zyngier Link: https://lkml.kernel.org/r/1453553867-27003-2-git-send-email-albeu@free.fr Signed-off-by: Jason Cooper

irqchip/ath79-misc: Move the MISC driver from arch/mips/ath79/

2016-02-17T13:44:31+00:00

The driver stays the same but the initialization changes a bit. For OF boards we now get the memory map from the OF node and use a linear mapping instead of the legacy mapping. For legacy boards we still use a legacy mapping and just pass down all the parameters from the board init code. Signed-off-by: Alban Bedel Acked-by: Marc Zyngier Link: https://lkml.kernel.org/r/1453553867-27003-1-git-send-email-albeu@free.fr Signed-off-by: Jason Cooper

MIPS: ath79: Remove some unused code from setup.c

2016-01-04T08:42:26+00:00

Remove the unused defines for the reference clocks rate and the useless machine init function. Signed-off-by: Alban Bedel Cc: Felix Fietkau Cc: Qais Yousef Cc: Andrew Bresticker Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11505/ Signed-off-by: Ralf Baechle

MIPS: ath79: Allow using ath79_ddr_wb_flush() from drivers

2016-01-04T08:42:25+00:00

Move the declaration of ath79_ddr_wb_flush() to asm/mach-ath79/ath79.h to allow using it from drivers. This is needed to move the CPU IRQ driver to drivers/irqchip. Signed-off-by: Alban Bedel Cc: Thomas Gleixner Cc: Jason Cooper Cc: Marc Zyngier Cc: Alexander Couzens Cc: Joel Porquet Cc: Andrew Bresticker Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11502/ Signed-off-by: Ralf Baechle

MIPS: ath79: Prepare moving the MISC driver to drivers/irqchip

2016-01-04T08:42:25+00:00

To prepare moving out of the arch directory rework the MISC implementation to use irq domains instead of hard coded IRQ numbers. Also remove the uses of the ath79_reset_base global pointer in the IRQ methods. Signed-off-by: Alban Bedel Cc: Thomas Gleixner Cc: Jason Cooper Cc: Marc Zyngier Cc: Alexander Couzens Cc: Joel Porquet Cc: Andrew Bresticker Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11506/ Signed-off-by: Ralf Baechle

MIPS: ath79: Remove useless #ifdef CONFIG_IRQCHIP

2016-01-04T08:42:25+00:00

IRQCHIP is always enabled, so the #ifdef can just be removed. Signed-off-by: Alban Bedel Cc: Thomas Gleixner Cc: Jason Cooper Cc: Marc Zyngier Cc: Alexander Couzens Cc: Joel Porquet Cc: Andrew Bresticker Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11504/ Signed-off-by: Ralf Baechle

MIPS: ath79: Add a machine entry for booting OF machines

2015-11-20T14:44:57+00:00

As I'm using a board with a broken old bootloader I hardcoded the mips_machtype and did't notice that the machine entry was still missing. [ralf@linux-mips.org: Fixed spelling message noticed by Sergei Shtylyov .] Signed-off-by: Alban Bedel Cc: Qais Yousef Cc: Felix Fietkau Cc: Andrew Bresticker Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11503/ Signed-off-by: Ralf Baechle