Dear Yannick,
Thank you for your patch,
Acked-by: Philippe Cornu <philippe.co...@st.com>
Dear Benjamin,
If you are fine with this patch, please push it *after* the patch named
"drm/stm: dsi: add support of an optional regulator" (if I well
understood those two patches)
Thank you
Philippe :-)
On 5/10/19 5:02 PM, Yannick Fertré wrote:
> Check version of DSI hardware IP. Only versions 1.30 & 1.31
> are supported.
>
> Signed-off-by: Yannick Fertré <yannick.fer...@st.com>
> ---
> drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 24 +++++++++++++++++++++++-
> 1 file changed, 23 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
> b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
> index 22bd095..29105e9 100644
> --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
> +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
> @@ -227,7 +227,6 @@ dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct
> drm_display_mode *mode,
> 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) {
> @@ -306,6 +305,7 @@ static int dw_mipi_dsi_stm_probe(struct platform_device
> *pdev)
> {
> struct device *dev = &pdev->dev;
> struct dw_mipi_dsi_stm *dsi;
> + struct clk *pclk;
> struct resource *res;
> int ret;
>
> @@ -347,6 +347,28 @@ static int dw_mipi_dsi_stm_probe(struct platform_device
> *pdev)
> goto err_clk_get;
> }
>
> + pclk = devm_clk_get(dev, "pclk");
> + if (IS_ERR(pclk)) {
> + ret = PTR_ERR(pclk);
> + DRM_ERROR("Unable to get peripheral clock: %d\n", ret);
> + goto err_dsi_probe;
> + }
> +
> + ret = clk_prepare_enable(pclk);
> + if (ret) {
> + DRM_ERROR("%s: Failed to enable peripheral clk\n", __func__);
> + goto err_dsi_probe;
> + }
> +
> + dsi->hw_version = dsi_read(dsi, DSI_VERSION) & VERSION;
> + clk_disable_unprepare(pclk);
> +
> + if (dsi->hw_version != HWVER_130 && dsi->hw_version != HWVER_131) {
> + ret = -ENODEV;
> + DRM_ERROR("bad dsi hardware version\n");
> + goto err_dsi_probe;
> + }
> +
> dw_mipi_dsi_stm_plat_data.base = dsi->base;
> dw_mipi_dsi_stm_plat_data.priv_data = dsi;
>
>
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