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video: check hardware version of DSI

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Check the hardware version of DSI. Versions 1.30 & 1.31 are only
supported.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
This commit is contained in:
Yannick Fertre 2020-06-24 10:43:59 +02:00 committed by Anatolij Gustschin
parent 70b06d9542
commit 670eda3293
1 changed files with 9 additions and 1 deletions
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10
drivers/video/stm32/stm32_dsi.c
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@ -271,7 +271,6 @@ static int dsi_get_lane_mbps(void *priv_data, struct display_timing *timings,
u32 val;
/* Update lane capabilities according to hw version */
dsi->hw_version = dsi_read(dsi, DSI_VERSION) & VERSION;
dsi->lane_min_kbps = LANE_MIN_KBPS;
dsi->lane_max_kbps = LANE_MAX_KBPS;
if (dsi->hw_version == HWVER_131) {
@ -475,6 +474,15 @@ static int stm32_dsi_probe(struct udevice *dev)
/* Reset */
reset_deassert(&rst);
/* check hardware version */
priv->hw_version = dsi_read(priv, DSI_VERSION) & VERSION;
if (priv->hw_version != HWVER_130 &&
priv->hw_version != HWVER_131) {
dev_err(dev, "DSI version 0x%x not supported\n", priv->hw_version);
ret = -ENODEV;
goto err_clk;
}
return 0;
err_clk:
clk_disable(&clk);