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X-OriginatorOrg: cadence.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Aug 2020 11:46:17.0989 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3602d618-bd4b-4847-81c9-08d83ac77eaf X-MS-Exchange-CrossTenant-Id: d36035c5-6ce6-4662-a3dc-e762e61ae4c9 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=d36035c5-6ce6-4662-a3dc-e762e61ae4c9;Ip=[199.43.4.23];Helo=[rmmaillnx1.cadence.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM12FT064.eop-nam12.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR07MB5753 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-08-07_08:2020-08-06,2020-08-07 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_check_notspam policy=outbound_check score=0 spamscore=0 phishscore=0 mlxlogscore=999 mlxscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008070085 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add support for PHY APB reset and make it optional. Signed-off-by: Swapnil Jakhade --- drivers/phy/cadence/phy-cadence-torrent.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c index 8c6e1aa93b64..7ccdb3105783 100644 --- a/drivers/phy/cadence/phy-cadence-torrent.c +++ b/drivers/phy/cadence/phy-cadence-torrent.c @@ -228,6 +228,7 @@ struct cdns_torrent_phy { void __iomem *sd_base; /* SD0801 registers base */ u32 max_bit_rate; /* Maximum link bit rate to use (in Mbps) */ struct reset_control *phy_rst; + struct reset_control *apb_rst; struct device *dev; struct clk *clk; unsigned long ref_clk_rate; @@ -1884,6 +1885,13 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev) return PTR_ERR(cdns_phy->phy_rst); } + cdns_phy->apb_rst = devm_reset_control_get_optional(dev, "torrent_apb"); + if (IS_ERR(cdns_phy->apb_rst)) { + dev_err(dev, "%s: failed to get apb reset\n", + dev->of_node->full_name); + return PTR_ERR(cdns_phy->apb_rst); + } + cdns_phy->clk = devm_clk_get(dev, "refclk"); if (IS_ERR(cdns_phy->clk)) { dev_err(dev, "phy ref clock not found\n"); @@ -1908,6 +1916,9 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev) if (ret) return ret; + /* Enable APB */ + reset_control_deassert(cdns_phy->apb_rst); + for_each_available_child_of_node(dev->of_node, child) { struct phy *gphy; @@ -2062,6 +2073,7 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev) for (i = 0; i < node; i++) reset_control_put(cdns_phy->phys[i].lnk_rst); of_node_put(child); + reset_control_assert(cdns_phy->apb_rst); return ret; } @@ -2071,6 +2083,7 @@ static int cdns_torrent_phy_remove(struct platform_device *pdev) int i; reset_control_assert(cdns_phy->phy_rst); + reset_control_assert(cdns_phy->apb_rst); for (i = 0; i < cdns_phy->nsubnodes; i++) { reset_control_assert(cdns_phy->phys[i].lnk_rst); reset_control_put(cdns_phy->phys[i].lnk_rst); -- 2.26.1