diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2012-09-28 20:16:28 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 01:13:04 -0700 |
| commit | b9aecc25367c9fb424aad24da63d467eb854dab4 (patch) | |
| tree | 6fdb53052015b65e096601ee58815fe395766e8c /drivers/spi | |
| parent | 48b9defd6567638e323451389cbc915b8cba036e (diff) | |
spi: tegra11: make sure SCLK is enable during transfer
Make sure that SCLK is enabled when spi trasnfer is in progress.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/139732
(cherry picked from commit 4be79e0c084fb7b01a95fccb8d2144b7b9fc16d0)
Change-Id: Ie9f7d398c776d4b9d9e7cfb91bc0eec054183ce4
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/143267
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
Rebase-Id: R4e02d8fde5de9d45299afc41e7eda55e0ed44151
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-tegra11.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/spi/spi-tegra11.c b/drivers/spi/spi-tegra11.c index 976b6585d16d..1b37821ec3c9 100644 --- a/drivers/spi/spi-tegra11.c +++ b/drivers/spi/spi-tegra11.c @@ -190,6 +190,7 @@ struct spi_tegra_data { char port_name[32]; struct clk *clk; + struct clk *sclk; void __iomem *base; phys_addr_t phys; unsigned irq; @@ -297,6 +298,7 @@ static int tegra_spi_clk_disable(struct spi_tegra_data *tspi) tspi->clk_state--; spin_unlock_irqrestore(&tspi->reg_lock, flags); clk_disable(tspi->clk); + clk_disable(tspi->sclk); return 0; } @@ -304,6 +306,7 @@ static int tegra_spi_clk_enable(struct spi_tegra_data *tspi) { unsigned long flags; + clk_enable(tspi->sclk); clk_enable(tspi->clk); spin_lock_irqsave(&tspi->reg_lock, flags); tspi->clk_state++; @@ -1273,6 +1276,13 @@ static int spi_tegra_probe(struct platform_device *pdev) goto exit_free_master; } + tspi->sclk = devm_clk_get(&pdev->dev, "sclk"); + if (IS_ERR(tspi->sclk)) { + dev_err(&pdev->dev, "can not get sclock\n"); + ret = PTR_ERR(tspi->sclk); + goto exit_free_master; + } + INIT_LIST_HEAD(&tspi->queue); if (pdata) { |