diff options
| author | Liu Ying <victor.liu@nxp.com> | 2022-06-01 13:12:07 +0800 |
|---|---|---|
| committer | Liu Ying <victor.liu@nxp.com> | 2022-07-13 13:22:48 +0800 |
| commit | aa778f8290151e0e820fc732e6855e23be2821f3 (patch) | |
| tree | eb6a6334a25e35f90e8b7d9025f2d52e3c9d2b91 /drivers/gpu | |
| parent | 879c4c2652f0465f28c97a9577b8b7953bc5278b (diff) | |
LF-6273-2 gpu: imx: lcdifv3: common: Control i.MX93 LCDIF QoS and cache when do runtime PM
As a temporary solution, we need to get the mediamix block control
regmap through the 'fsl,gpr' lcdif DT node property to control lcdif
QoS and cache in the lcdif driver to achieve better system performance
and lcdif memory access performance. In the future, we'll use proper
and generic APIs in the lcdif driver to do the control instead of
accessing the mediamix block control register by our own.
Cc: Sandor Yu <Sandor.yu@nxp.com>
Reviewed-by: Sandor Yu <Sandor.yu@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/imx/lcdifv3/lcdifv3-common.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/imx/lcdifv3/lcdifv3-common.c b/drivers/gpu/imx/lcdifv3/lcdifv3-common.c index abe173096312..491a6b2e2e93 100644 --- a/drivers/gpu/imx/lcdifv3/lcdifv3-common.c +++ b/drivers/gpu/imx/lcdifv3/lcdifv3-common.c @@ -734,6 +734,15 @@ static int imx_lcdifv3_probe(struct platform_device *pdev) if (IS_ERR(lcdifv3->base)) return PTR_ERR(lcdifv3->base); + if (of_device_is_compatible(np, "fsl,imx93-lcdif")) { + lcdifv3->gpr = syscon_regmap_lookup_by_phandle(np, "fsl,gpr"); + if (IS_ERR(lcdifv3->gpr)) { + ret = PTR_ERR(lcdifv3->gpr); + dev_err(dev, "failed to get gpr: %d\n", ret); + return ret; + } + } + lcdifv3->dev = dev; /* reset controller to avoid any conflict @@ -796,6 +805,10 @@ static int imx_lcdifv3_runtime_suspend(struct device *dev) release_bus_freq(BUS_FREQ_HIGH); + /* clear LCDIF QoS and cache */ + if (of_device_is_compatible(dev->of_node, "fsl,imx93-lcdif")) + regmap_write(lcdifv3->gpr, 0xc, 0x0); + return 0; } @@ -812,6 +825,10 @@ static int imx_lcdifv3_runtime_resume(struct device *dev) if (!atomic_dec_and_test(&lcdifv3->rpm_suspended)) return 0; + /* set LCDIF QoS and cache */ + if (of_device_is_compatible(dev->of_node, "fsl,imx93-lcdif")) + regmap_write(lcdifv3->gpr, 0xc, 0x3712); + request_bus_freq(BUS_FREQ_HIGH); ret = lcdifv3_enable_clocks(lcdifv3); |