Intel OpenBMC Linux kernel source tree (mirror) https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=dev-4.10 2017-07-31T09:28:36+00:00 2017-07-31T09:28:36+00:00 Jeremy Kerr jk@ozlabs.org 2017-05-02T07:45:43+00:00 urn:sha1:f9110c3b145d2eaee9f04c6b4be3dc7f2dbba245 This change adds a driver for the 16550-based Aspeed virtual UART device. We use a similar process to the of_serial driver for device probe, but expose some VUART-specific functions through sysfs too. The VUART is two UART 'front ends' connected by their FIFO (no actual serial line in between). One is on the BMC side (management controller) and one is on the host CPU side. This driver is for the BMC side. The sysfs files allow the BMC userspace, which owns the system configuration policy, to specify at what IO port and interrupt number the host side will appear to the host on the Host <-> BMC LPC bus. It could be different on a different system (though most of them use 3f8/4). OpenPOWER host firmware doesn't like it when the host-side of the VUART's FIFO is not drained. This driver only disables host TX discard mode when the port is in use. We set the VUART enabled bit when we bind to the device, and clear it on unbind. We don't want to do this on open/release, as the host may be using this bit to configure serial output modes, which is independent of whether the devices has been opened by BMC userspace. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Joel Stanley <joel@jms.id.au> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry picked from commit 7fbcf3afe6e8e180bfc39fb3f41657fa6e4af55c) Signed-off-by: Joel Stanley <joel@jms.id.au> 2017-07-31T09:14:36+00:00 Joel Stanley joel@jms.id.au 2017-07-31T09:14:36+00:00 urn:sha1:9e7135e917c92dc1887872146bc684a324514853 This reverts commit 969ba225f4bcd109e34ae9d6b40429a32e756ed4. 2017-06-06T06:21:27+00:00 Joel Stanley joel@jms.id.au 2017-05-29T09:57:52+00:00 urn:sha1:5b69dbbdc1759ab24d9eb70e70f20c1873993ec5 This adds the hooks for an optional reset controller in the 8250 device tree node. Signed-off-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry picked from commit e2860e1f62f2e87d268403a749ba1f19663ef19f) Signed-off-by: Joel Stanley <joel@jms.id.au> 2017-03-22T14:57:51+00:00 Jeremy Kerr jk@ozlabs.org 2016-08-04T20:51:02+00:00 urn:sha1:969ba225f4bcd109e34ae9d6b40429a32e756ed4 This change adds a driver for the 16550-based Aspeed virtual UART device. We use a similar process to the of_serial driver for device probe, but expose some VUART-specific functions through sysfs too. If host TX discard mode is enabled, we don't see the LSR[RBR} bit getting set on new characters written on the host side. This makes the VUART a little useless. OpenPOWER firmware doesn't like it when the host-side of the VUART's FIFO is not drained. This change only disables host TX discard mode when the port is in use. We set the VUART enabled bit when we bind to the device, and clear it on unbind. We don't want to do this on open/release, as the host may be using this bit to configure serial output modes, which is independent of whether the devices has been opened by BMC userspace. OpenBMC-Staging-Count: 1 Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Xo Wang <xow@google.com> Signed-off-by: Joel Stanley <joel@jms.id.au> 2016-11-19T02:35:39+00:00 Olof Johansson olof@lixom.net 2016-11-19T02:35:39+00:00 urn:sha1:1630ae0a5e8967e7f0f62df6e47f3fbd7bd401ed dt-bindings: Cleanups and additions for v4.10-rc1 Contains two small patches, one fixing a typo and the other adding the compatible string for the Denver CPUs found on the new Tegra186 SoCs. * tag 'tegra-for-4.10-dt-bindings' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: dt-bindings: Add documentation for Tegra186 Denver serial: tegra20-hsuart: Fix typo in dmas DT binding description Signed-off-by: Olof Johansson <olof@lixom.net> 2016-11-07T12:58:35+00:00 Mirza Krak mirza.krak@gmail.com 2016-07-17T20:31:21+00:00 urn:sha1:44a1e990b5c36eeb6062987225f36ac3c4b54e88 The description for dmas references a second property, which should be "dma-names" instead of "clock-names". Signed-off-by: Mirza Krak <mirza.krak@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Thierry Reding <treding@nvidia.com> 2016-10-27T14:41:56+00:00 Sergei Shtylyov sergei.shtylyov@cogentembedded.com 2016-10-21T20:00:43+00:00 urn:sha1:c03e1b8703a4a0c8bac7f6b65d8fcb539ec62d82 Renesas RZ/G SoC also have the SCIF, SCIFA, SCIFB, and HSCIF ports and they seem compatible with the R-Car gen2 SoC in this respect... Document RZ/G1[ME] (also known as R8A774[35]) SoC bindings. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2016-10-27T14:00:32+00:00 Nava kishore Manne nava.manne@xilinx.com 2016-10-12T07:47:28+00:00 urn:sha1:78c22449f2d32aafd8804047f7e3bee4926b52eb This patch Adds the new compatible string for ZynqMP SoC. Signed-off-by: Nava kishore Manne <navam@xilinx.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2016-09-27T10:55:49+00:00 Thor Thayer tthayer@opensource.altera.com 2016-09-22T19:56:14+00:00 urn:sha1:51311eaacd2d3558cfa341e97d7ebffb1cc13cd8 Add the device tree binding needed to support the TX FIFO threshold parameter. Signed-off-by: Thor Thayer <tthayer@opensource.altera.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2016-09-22T09:48:55+00:00 Alexandre TORGUE alexandre.torgue@st.com 2016-09-15T16:42:39+00:00 urn:sha1:3fa047fde43c1a100985751638d0d19b50913ff1 Signed-off-by: Gerald Baeza <gerald.baeza@st.com> Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>