diff options
| author | Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2023-09-21 08:57:00 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2023-09-25 23:35:14 +0200 |
| commit | 7ccd40edc1f5c43e3f1c7d209336d3981943ab63 (patch) | |
| tree | 50cca4531a95a56aa197efb9f0cdcee6fea63579 /drivers/i3c | |
| parent | 4e40642cdb621c669507d7ef098c93ff98e8747c (diff) | |
| download | linux-7ccd40edc1f5c43e3f1c7d209336d3981943ab63.tar.gz | |
i3c: mipi-i3c-hci: Set number of SW enabled Ring Bundles earlier
Number of software enabled Ring Bundles must be set before using them.
Otherwise Ring will not start and may be power-gated by the Host
Controller.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20230921055704.1087277-9-jarkko.nikula@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/i3c')
| -rw-r--r-- | drivers/i3c/master/mipi-i3c-hci/dma.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/i3c/master/mipi-i3c-hci/dma.c b/drivers/i3c/master/mipi-i3c-hci/dma.c index d2dbbcdad1e94..cb41d0026abd2 100644 --- a/drivers/i3c/master/mipi-i3c-hci/dma.c +++ b/drivers/i3c/master/mipi-i3c-hci/dma.c @@ -229,6 +229,9 @@ static int hci_dma_init(struct i3c_hci *hci) hci->io_data = rings; rings->total = nr_rings; + regval = FIELD_PREP(MAX_HEADER_COUNT, rings->total); + rhs_reg_write(CONTROL, regval); + for (i = 0; i < rings->total; i++) { u32 offset = rhs_reg_read(RHn_OFFSET(i)); @@ -329,8 +332,6 @@ ring_ready: RING_CTRL_RUN_STOP); } - regval = FIELD_PREP(MAX_HEADER_COUNT, rings->total); - rhs_reg_write(CONTROL, regval); return 0; err_out: |