diff options
| -rw-r--r-- | drivers/remoteproc/ti_k3_r5_remoteproc.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c index 66a32dcdd7d0..62b5a4c29456 100644 --- a/drivers/remoteproc/ti_k3_r5_remoteproc.c +++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c @@ -71,9 +71,11 @@ enum cluster_mode { /** * struct k3_r5_soc_data - match data to handle SoC variations + * @tcm_is_double: flag to denote the larger unified TCMs in certain modes * @tcm_ecc_autoinit: flag to denote the auto-initialization of TCMs for ECC */ struct k3_r5_soc_data { + bool tcm_is_double; bool tcm_ecc_autoinit; }; @@ -886,6 +888,43 @@ static void k3_r5_reserved_mem_exit(struct k3_r5_rproc *kproc) of_reserved_mem_device_release(kproc->dev); } +/* + * Each R5F core within a typical R5FSS instance has a total of 64 KB of TCMs, + * split equally into two 32 KB banks between ATCM and BTCM. The TCMs from both + * cores are usable in Split-mode, but only the Core0 TCMs can be used in + * LockStep-mode. The newer revisions of the R5FSS IP maximizes these TCMs by + * leveraging the Core1 TCMs as well in certain modes where they would have + * otherwise been unusable (Eg: LockStep-mode on J7200 SoCs). This is done by + * making a Core1 TCM visible immediately after the corresponding Core0 TCM. + * The SoC memory map uses the larger 64 KB sizes for the Core0 TCMs, and the + * dts representation reflects this increased size on supported SoCs. The Core0 + * TCM sizes therefore have to be adjusted to only half the original size in + * Split mode. + */ +static void k3_r5_adjust_tcm_sizes(struct k3_r5_rproc *kproc) +{ + struct k3_r5_cluster *cluster = kproc->cluster; + struct k3_r5_core *core = kproc->core; + struct device *cdev = core->dev; + struct k3_r5_core *core0; + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP || + !cluster->soc_data->tcm_is_double) + return; + + core0 = list_first_entry(&cluster->cores, struct k3_r5_core, elem); + if (core == core0) { + WARN_ON(core->mem[0].size != SZ_64K); + WARN_ON(core->mem[1].size != SZ_64K); + + core->mem[0].size /= 2; + core->mem[1].size /= 2; + + dev_dbg(cdev, "adjusted TCM sizes, ATCM = 0x%zx BTCM = 0x%zx\n", + core->mem[0].size, core->mem[1].size); + } +} + static int k3_r5_cluster_rproc_init(struct platform_device *pdev) { struct k3_r5_cluster *cluster = platform_get_drvdata(pdev); @@ -933,6 +972,8 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev) goto err_config; } + k3_r5_adjust_tcm_sizes(kproc); + ret = k3_r5_reserved_mem_init(kproc); if (ret) { dev_err(dev, "reserved memory init failed, ret = %d\n", @@ -1407,10 +1448,12 @@ static int k3_r5_probe(struct platform_device *pdev) } static const struct k3_r5_soc_data am65_j721e_soc_data = { + .tcm_is_double = false, .tcm_ecc_autoinit = false, }; static const struct k3_r5_soc_data j7200_soc_data = { + .tcm_is_double = true, .tcm_ecc_autoinit = true, }; |