On Gen3, we can only do RXDMA once per transfer reliably. For that, we
must reset the device, then we can have RXDMA once. This patch
implements this. When there is no reset controller or the reset fails,
RXDMA will be blocked completely. Otherwise, it will be disabled after
the first RXDMA
As mentioned in the patch description, this patch works around a HW issue on
Renesas R-Car Gen3 SoCs. It had not been discovered yet because it only happens
when clearing DMA enable bits is too late because of latency. To reproduce the
problem reliably, the below patch was used [1].
To the best
On Thu, Jun 28, 2018 at 08:22:59AM -0500, Bjorn Helgaas wrote:
> On Wed, Jun 20, 2018 at 08:51:37PM +0300, Sergei Shtylyov wrote:
> > When testing the R-Car PCIe driver on the Condor board, I noticed that iff
> > I left the PCIe PHY driver disabled, the kernel crashed with this BUG:
> >
> > [
On Thu, Jun 28, 2018 at 2:43 PM Simon Horman wrote:
> This node is just a placeholder but fills that function better if it does
> not trigger build warnings. This update satisfies the requirement that
> nodes with #address-cells/#size-cells properties have more than one child
> node.
>
> This is
On Wed, Jun 20, 2018 at 08:51:37PM +0300, Sergei Shtylyov wrote:
> When testing the R-Car PCIe driver on the Condor board, I noticed that iff
> I left the PCIe PHY driver disabled, the kernel crashed with this BUG:
>
> [1.225819] kernel BUG at lib/ioremap.c:72!
> [1.230007] Internal
On Thu, Jun 28, 2018 at 1:53 PM Yoshihiro Shimoda
wrote:
> This patch is fixes an issue that the SDHI_INTERNAL_DMAC_RX_IN_USE
> flag cannot be cleared because tmio_mmc_core sets the host->data
> to NULL before the tmio_mmc_core calls tmio_mmc_abort_dma().
>
> So, this patch clears the
Hi Shimoda-san,
On Thu, Jun 28, 2018 at 1:53 PM Yoshihiro Shimoda
wrote:
> This patch fixes an issue that lacks the dma_unmap_sg() calling in
> the error patch of renesas_sdhi_internal_dmac_start_dma().
Nice catch!
Thanks for your patch!
> Fixes: 0cbc94daa554 ("mmc: renesas_sdhi_internal_dmac:
Hi Simon,
On Thu, Jun 28, 2018 at 2:16 PM Simon Horman wrote:
> On Thu, Jun 28, 2018 at 02:00:32PM +0200, Simon Horman wrote:
> > On Thu, Jun 14, 2018 at 11:56:32AM +0100, Michel Pollet wrote:
> > > This adds the Renesas R9A06G032 bare bone support.
> > >
> > > This currently only handles the
: graph node has single child
node 'port@0', #address-cells/#size-cells are not necessary
Signed-off-by: Simon Horman
---
Based on renesas-devel-20180628-v4.18-rc2
---
arch/arm64/boot/dts/renesas/r8a77965.dtsi | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a77965
This patch fixes an issue that lacks the dma_unmap_sg() calling in
the error patch of renesas_sdhi_internal_dmac_start_dma().
Fixes: 0cbc94daa554 ("mmc: renesas_sdhi_internal_dmac: limit DMA RX for old
SoCs")
Cc: # v4.17+
Signed-off-by: Yoshihiro Shimoda
---
This patch is fixes an issue that the SDHI_INTERNAL_DMAC_RX_IN_USE
flag cannot be cleared because tmio_mmc_core sets the host->data
to NULL before the tmio_mmc_core calls tmio_mmc_abort_dma().
So, this patch clears the SDHI_INTERNAL_DMAC_RX_IN_USE in
the renesas_sdhi_internal_dmac_abort_dma()
This patch set is based on the mmc.git / fixes branch.
Yoshihiro Shimoda (2):
mmc: renesas_sdhi_internal_dmac: Fix missing unmap in error patch
mmc: renesas_sdhi_internal_dmac: Cannot clear the RX_IN_USE in abort
drivers/mmc/host/renesas_sdhi_internal_dmac.c | 8 +---
1 file changed, 5
> Note that reset controller support is optional, so we want to add
>
> select RESET_CONTROLLER if ARCH_RENESAS && ARM64
>
> to the I2C_RCAR section drivers/i2c/busses/Kconfig. Else reset will fail
> silently.
Actually, no. I use a non-optional reset_controller_get[1], so I will get
an
Hi Niklas,
On Thu, Jun 28, 2018 at 2:41 AM Niklas Söderlund
wrote:
> On 2018-06-27 10:27:54 +0200, Geert Uytterhoeven wrote:
> > On Wed, Jun 27, 2018 at 8:01 AM Niklas Söderlund
> > wrote:
> > > Not all SoCs describes the drive strength registers. When reading the
> > > sysfs pinconf-pins file
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