From: Jarkko Nikula <jarkko.nikula@linux.intel.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: linux-i3c@lists.infradead.org,
Jarkko Nikula <jarkko.nikula@linux.intel.com>
Subject: [PATCH 08/12] i3c: mipi-i3c-hci: Set number of SW enabled Ring Bundles earlier
Date: Thu, 21 Sep 2023 08:57:00 +0300 [thread overview]
Message-ID: <20230921055704.1087277-9-jarkko.nikula@linux.intel.com> (raw)
In-Reply-To: <20230921055704.1087277-1-jarkko.nikula@linux.intel.com>
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>
---
drivers/i3c/master/mipi-i3c-hci/dma.c | 5 +++--
1 file 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 df569d1351be..6c7eef17921a 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 @@ static int hci_dma_init(struct i3c_hci *hci)
RING_CTRL_RUN_STOP);
}
- regval = FIELD_PREP(MAX_HEADER_COUNT, rings->total);
- rhs_reg_write(CONTROL, regval);
return 0;
err_out:
--
2.40.1
--
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next prev parent reply other threads:[~2023-09-21 5:58 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 5:56 [PATCH 00/12] i3c: mipi-i3c-hci: Enabling fixes Jarkko Nikula
2023-09-21 5:56 ` [PATCH 01/12] i3c: master: Inherit DMA masks and parameters from parent device Jarkko Nikula
2023-09-21 5:56 ` [PATCH 02/12] i3c: mipi-i3c-hci: Add MODULE_ALIAS Jarkko Nikula
2023-09-21 5:56 ` [PATCH 03/12] i3c: mipi-i3c-hci: Fix DAT/DCT entry sizes Jarkko Nikula
2023-09-21 5:56 ` [PATCH 04/12] i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler Jarkko Nikula
2023-09-21 5:56 ` [PATCH 05/12] i3c: mipi-i3c-hci: Remove BUG() when Ring Abort request times out Jarkko Nikula
2023-09-21 5:56 ` [PATCH 06/12] i3c: mipi-i3c-hci: Set ring start request together with enable Jarkko Nikula
2023-09-21 5:56 ` [PATCH 07/12] i3c: mipi-i3c-hci: Fix race between bus cleanup and interrupt Jarkko Nikula
2023-09-21 5:57 ` Jarkko Nikula [this message]
2023-09-21 5:57 ` [PATCH 09/12] i3c: mipi-i3c-hci: Do not unmap region not mapped for transfer Jarkko Nikula
2023-09-21 5:57 ` [PATCH 10/12] i3c: mipi-i3c-hci: Fix missing xfer->completion in hci_cmd_v1_daa() Jarkko Nikula
2023-09-21 5:57 ` [PATCH 11/12] i3c: mipi-i3c-hci: Resume controller explicitly Jarkko Nikula
2023-09-21 5:57 ` [PATCH 12/12] i3c: mipi-i3c-hci: Resume controller after aborted transfer Jarkko Nikula
2023-09-25 21:36 ` [PATCH 00/12] i3c: mipi-i3c-hci: Enabling fixes Alexandre Belloni
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