| Message ID | 20211020215321.33960-5-eajames@linux.ibm.com |
|---|---|
| State | New |
| Headers | show
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Wed, 20 Oct 2021 21:53:24 +0000 (GMT) From: Eddie James <eajames@linux.ibm.com> To: openbmc@lists.ozlabs.org Subject: [PATCH linux dev-5.14 4/5] ARM: dts: aspeed: everest: Add IBM Operation Panel I2C device Date: Wed, 20 Oct 2021 16:53:20 -0500 Message-Id: <20211020215321.33960-5-eajames@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20211020215321.33960-1-eajames@linux.ibm.com> References: <20211020215321.33960-1-eajames@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: dgtt7JwFOC1NM3389MDHb-7dGA24cJql X-Proofpoint-ORIG-GUID: dgtt7JwFOC1NM3389MDHb-7dGA24cJql X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.182.1,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.0.607.475 definitions=2021-10-20_06,2021-10-20_02,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 phishscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 clxscore=1015 mlxscore=0 malwarescore=0 suspectscore=0 mlxlogscore=999 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109230001 definitions=main-2110200123 X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC <openbmc.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/openbmc>, <mailto:openbmc-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/openbmc/> List-Post: <mailto:openbmc@lists.ozlabs.org> List-Help: <mailto:openbmc-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/openbmc>, <mailto:openbmc-request@lists.ozlabs.org?subject=subscribe> Errors-To: openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "openbmc" <openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
| Series |
ARM: dts: aspeed: Rainier and Everest devicetree updates
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diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts index 59e187f3cba3..cc4314141aa6 100644 --- a/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts +++ b/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts @@ -1908,15 +1908,21 @@ eeprom@52 { }; &i2c14 { + multi-master; status = "okay"; + ibm-panel@62 { + compatible = "ibm,op-panel"; + reg = <(0x62 | I2C_OWN_SLAVE_ADDRESS)>; + }; + i2c-switch@70 { compatible = "nxp,pca9546"; reg = <0x70>; #address-cells = <1>; #size-cells = <0>; status = "okay"; - i2c-mux-idle-disconnect; + idle-state = <1>; i2c14mux0chn0: i2c@0 { #address-cells = <1>;
Set I2C bus 14 to multi-master mode and add the panel device that will register the I2C controller as a slave device. In addition, in early Everest systems, the panel device was behind an I2C switch, which doesn't work for slave mode. Get it working (albeit unreliably, since a master transaction might switch the switch at any moment) by defaulting the switch channel to the one with the panel. Signed-off-by: Eddie James <eajames@linux.ibm.com> --- arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)