From: Grygorii Strashko grygorii.strashko@ti.com
[ Upstream commit 95e7be062aea6d2e09116cd4d28957d310c04781 ]
The AM65x SR2.0 Ringacc has fixed errata i2023 "RINGACC, UDMA: RINGACC and UDMA Ring State Interoperability Issue after Channel Teardown". This errata also fixed for J271E SoC.
Use SOC bus data for K3 SoC identification and enable i2023 errate w/a only for the AM65x SR1.0. This also makes obsolete "ti,dma-ring-reset-quirk" DT property.
Signed-off-by: Grygorii Strashko grygorii.strashko@ti.com Signed-off-by: Santosh Shilimkar santosh.shilimkar@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/soc/ti/k3-ringacc.c | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-)
diff --git a/drivers/soc/ti/k3-ringacc.c b/drivers/soc/ti/k3-ringacc.c index 6dcc21dde0cb7..1147dc4c1d596 100644 --- a/drivers/soc/ti/k3-ringacc.c +++ b/drivers/soc/ti/k3-ringacc.c @@ -10,6 +10,7 @@ #include <linux/init.h> #include <linux/of.h> #include <linux/platform_device.h> +#include <linux/sys_soc.h> #include <linux/soc/ti/k3-ringacc.h> #include <linux/soc/ti/ti_sci_protocol.h> #include <linux/soc/ti/ti_sci_inta_msi.h> @@ -208,6 +209,15 @@ struct k3_ringacc { const struct k3_ringacc_ops *ops; };
+/** + * struct k3_ringacc - Rings accelerator SoC data + * + * @dma_ring_reset_quirk: DMA reset w/a enable + */ +struct k3_ringacc_soc_data { + unsigned dma_ring_reset_quirk:1; +}; + static long k3_ringacc_ring_get_fifo_pos(struct k3_ring *ring) { return K3_RINGACC_FIFO_WINDOW_SIZE_BYTES - @@ -1051,9 +1061,6 @@ static int k3_ringacc_probe_dt(struct k3_ringacc *ringacc) return ret; }
- ringacc->dma_ring_reset_quirk = - of_property_read_bool(node, "ti,dma-ring-reset-quirk"); - ringacc->tisci = ti_sci_get_by_phandle(node, "ti,sci"); if (IS_ERR(ringacc->tisci)) { ret = PTR_ERR(ringacc->tisci); @@ -1084,9 +1091,22 @@ static int k3_ringacc_probe_dt(struct k3_ringacc *ringacc) ringacc->rm_gp_range); }
+static const struct k3_ringacc_soc_data k3_ringacc_soc_data_sr1 = { + .dma_ring_reset_quirk = 1, +}; + +static const struct soc_device_attribute k3_ringacc_socinfo[] = { + { .family = "AM65X", + .revision = "SR1.0", + .data = &k3_ringacc_soc_data_sr1 + }, + {/* sentinel */} +}; + static int k3_ringacc_init(struct platform_device *pdev, struct k3_ringacc *ringacc) { + const struct soc_device_attribute *soc; void __iomem *base_fifo, *base_rt; struct device *dev = &pdev->dev; struct resource *res; @@ -1103,6 +1123,13 @@ static int k3_ringacc_init(struct platform_device *pdev, if (ret) return ret;
+ soc = soc_device_match(k3_ringacc_socinfo); + if (soc && soc->data) { + const struct k3_ringacc_soc_data *soc_data = soc->data; + + ringacc->dma_ring_reset_quirk = soc_data->dma_ring_reset_quirk; + } + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rt"); base_rt = devm_ioremap_resource(dev, res); if (IS_ERR(base_rt))